Osibisa-Woyaya (1971)

Behind a spectacular cover designed by Roger Dean lies Osibisa's second album, which continues in the same stylistic vein as their debut, but with added elements of jazz and rock. For this second album, the band underwent several lineup changes, which did not alter their characteristic sound. Varied percussion remains the driving force of Osibisa's music, embellished with a magnificent horn section, keyboards, flute, and rock guitars. From Latin jazz sounds like "Rabiatu", to funk rock "Move On", passing through percussion-heavy jazz in "Spirits Up Above", the Afro-funk "Y Sharp", the fusion of psychedelic music, rock, and African tribal sounds in "Survival", and the atmospheric African ballad "Woyaya", this second effort by Osibisa is an excellent and innovative jazz-rock album infused with African and Caribbean influences.

Heart-Little Queen (1977)

Influenced by Led Zeppelin, Heart have earned critical acclaim for 40 years with their outstanding songwriting, which has shaped many of their albums, some of them essential to rock music. "Little Queen", the second album from this formidable band, is known worldwide for the hit "Barracuda", which, however, doesn't overshadow the rest of the tracks, a skillful blend of rock whirlwinds and delicate folk songs. Good examples of the band's acoustic side are "Love Alive" and the instrumental "Sylvan Song", which, along with "Dream of the Archer", represents the band's folk influence on this album. On the opposite end of the spectrum, the hard rock tracks, in addition to the aforementioned "Barracuda", are found in "Little Queen", featuring Ann Wilson at her peak with her powerful vocals, while "Go On Cuy" showcases Heart's more bucolic side while simultaneously delivering their heavy and forceful rock. "Little Queen" is the most folk and acoustic album of the band's career, full of great acoustic beauty, demonstrating the two sides of Heart, on the one hand the rawness of their rock songs and on the other the delicacy of their intense and delicate compositions.

The Marshall Tucker Band-Caroline Dreams (1977)

The Marshall Tucker Band was never a typical Southern rock band, and despite being categorized within this style, they are considered one of the greatest of the genre. Their style evolved over the years, incorporating influences such as country, rock, jazz, and rhythm and blues, and this band has been an inspiration for many subsequent jam bands. "Caroline Dreams" (1977), their sixth album, was released at a time when the two biggest bands in Southern rock were going through serious difficulties. Lynyrd Skynyrd had suffered the infamous plane crash shortly before the album's release, and The Allman Brothers were not at their peak. All of this meant that second-generation bands like Molly Hatchet, Firefall, 38 Special, Atlanta Rhythm Section, and The Marshall Tucker Band themselves successfully filled this void. Unlike Lynyrd Skynyrd and the Allman Brothers, Marshall Tucker, led by the brilliant Tommy Caldwell, adopted a more jazz-oriented approach, moving away from the hard rock of the former and the blues and country of the latter. Fantastic tracks like "Fly Like an Eagle", "Life in a Song", "I Should Have Never Started Lovin' You", and "Tell It to the Devil" make up a body of work that, along with their masterful second album, "A New Life", ranks among the best that Southern rock has ever produced.

Allen Collins Band-Here, There and Back (1983)

Emerging from the ashes of the Rossington Collins Band, formed by guitarists Gary Rossington and Allen Collins, former members of the legendary Lynyrd Skynyrd, came the Allen Collins Band. This band, in addition to Allen Collins, included keyboardist Billy Powell, bassist Leon Wilkeson, guitarists Randall Hall and Barry Le Harwood, and vocalist Jimmy Dougherty. Following in the footsteps of Lynyrd Skynyrd, they based their style on Southern rock and the blues typical of Jacksonville. However, unlike their parent band, the Allen Collins Band showcased a more accessible and commercially viable version of the characteristic sound of the American South, with a less abrasive and energetic Southern rock sound, lacking the influence of soul, country, and hard rock. Their only release was recorded at the famous Studio One in Georgia, an iconic studio used by major bands of the genre such as 38 Special and Atlanta Rhythm Section, among many others. Comprising a series of songs closer to AOR and mainstream rock, but always filtered through the unmistakable lens of Southern rock, tracks like “Just Trouble”, “Hangin’ Judge”, “Ready To Move”, and “Chapter One” appear, while “Everything You Need” is perhaps the only moment where the band's original roots subtly shine through. Despite its undeniable quality, this single release failed to achieve the desired commercial success, leading to the Allen Collins Band's definitive breakup after a subsequent tour.

Frank Zappa-Have I Offended Someone? (1997)

Released posthumously in 1997, "Have I Offended Someone?" is a Frank Zappa compilation featuring fifteen tracks with a clear common thread: they were offensive to certain segments of American society. No one is spared, from wealthy socialites to homosexuals, feminists, music executives, Catholics, moralists, punks, disco music, and pseudo-intellectuals all are mercilessly subjected to Zappa's satire and irony. Musically, all the tracks were selected by Zappa himself before his death, leaving precise instructions for their subsequent mixing in the studio. Incredibly, an undisputed genius and such a prominent figure as Zappa was one of the artists most affected by his record label's tyranny, as his original contract did not allow him to participate in the final versions of his work (or at least almost never). It is for this reason that the vast majority of songs compiled here have undergone partial reconstruction and the necessary remixes. In addition, several live versions, such as "Dumb All Over" and "Tinsel Town Rebellion", have never been officially released before. Also included are versions that appeared on the original albums "Sheik Yerbouti", "Zoot Allures", "You Are What You Is", "Them or Us", "Zappa in New York", and "Joe's Garage".

Iron Maiden-The Number Of The Beast (1982)

Iron Maiden's third album marked a departure from the punk sound of their previous work, venturing into a more complex style with allusions to historical and epic moments, featuring a more sophisticated and, to some extent, much more virtuosic and progressive heavy metal. This was the first album to feature Bruce Dickinson as vocalist, replacing Paul Di'Anno. The rest of the lineup remained the same: bassist Steve Harris, guitarists Dave Murray and Adrian Smith, and drummer Clive Burr. Recorded in late 1981 and early 1982 at Battery Studios in London, the album was produced by the renowned Martin Birch. “The Number of the Beast” is a vibrant and astonishing album showcasing the virtuosity of all its members. It opens with the fast-paced and powerful “Invaders”, followed by the dynamic “Children of the Damned”, the melodic “The Prisoner”, the potent “22 Acacia Avenue”, the breathtaking title track “The Number of the Beast”, the catchy “Run to the Hills”, and the devastating and sensational “Hallowed Be Thy Name”. Considered one of the great albums of the New Wave of British Heavy Metal (NWOBHM) and heavy metal in general, “The Number of the Beast” reached the top of the charts in numerous countries around the world, achieving sales that far exceeded thirteen million copies worldwide.

Yes-Yes (1969)

In 1969, Yes released their debut album, which still displayed a certain stylistic immaturity. However, it was also where they began to lay the foundations for what, several years later, would become one of the most impressive and meteoric careers in the world of progressive rock. The lineup that recorded this debut consisted of Jon Anderson (vocals), Chris Squire (bass and vocals), Bill Bruford (drums), Tony Kaye (keyboards), and Peter Banks (guitars and vocals). Despite the album's overall incoherence, there are some truly noteworthy moments, based primarily on psychedelic sounds, progressive folk, and some passages of energetic rock. Instrumental refinement and complexity are present in tracks like "I See You", "Yesterday and Today", "Harold Land", and "Sweetness", while Kaye's Hammond organ drives the beautiful "Looking Around". Although there is still no unified style, there are echoes of the more psychedelic Pink Floyd, the pop of The Beatles and the American folk of The Byrds, so the musical diversity is quite eclectic and original, forming with all of this a fairly solid and interesting debut.

Kenny Loggins-Nightwatch (1978)

After his time with Gator Creek, the duo Loggins and Messina, and collaborations with Electric Prunes, composer, singer, and music graduate from the University of Pasadena, Kenny Loggins, launched his solo career, debuting with the album "Celebrate Me Home" in 1977. A year later, he released his most commercially acclaimed album, "Nightwatch", produced by Bob James, which contained an attractive collection of soft rock songs with soul influences, achieving platinum status and reaching number seven on the Billboard charts. From the atmospheric and sophisticated "Nightwatch" to the soulful "Easy Driver", passing through the reworking of Billy Joe Royal's "In The Boondocks", the beautiful mid-tempo duet with Stevie Nicks "Whenever I Call You Friend", or the catchy "What a Fool Believes", which, composed with Michael McDonald, would become a huge hit the following year with The Doobie Brothers' version for their successful album "Minute By Minute", this second album would represent Kenny Loggins' most relevant work in the 1970s.

Bloque-Hombre, Tierra y Alma (1979)

Bloque was a Spanish progressive rock band that released four studio albums, some of which are considered among the best in Spanish progressive rock. Founded in Cantabria in 1973, the band consisted of keyboardist Juan Carlos Gutiérrez, bassist Luis Pastor, drummer Paco Baños, and guitarists Juan José Respuela and Sixto Ruiz. In 1978, they released their self-titled debut album, "Bloque", which already showcased their talent but was nonetheless hampered by a certain immaturity in their compositions. A year later, they captured the attention of fans with their excellent "Hombre, Tierra y Alma" (Man, Earth and Soul), a concept album featuring more elaborate compositions and more complex instrumentation. Long instrumental passages are the common thread throughout this outstanding work. From the opening and atmospheric "Humanidad indefensa" (Defenseless Humanity), to the folk-tinged instrumental "Por fin he vuelto a ti" (Finally I've Returned to You), and including rock exercises like the powerful "En infierno está aquí" (Hell Is Here), or the melodic progressive "Meditación parte I" (Meditation Part I). This album showcases the band's perfect balance between the hypnotic and ethereal sounds of the keyboards and the electric guitar riffs combined with acoustic guitars. In a similar vein, the band released "Hijo del Alba" (Son of Dawn) in 1980, which, despite its immense quality, was released in the midst of the Spanish post-punk era and went somewhat unnoticed by the public, who were more interested in the music of the Movida Madrileña (Madrid Scene). Today, Bloque is considered a cult band in the history of Spanish rock, having created music that was in no way different from its more renowned European contemporaries.

Caravan-Waterloo Lily (1972)

Caravan's fourth album, "Waterloo Lily", was the last in which the band truly captured the classic sound of the early 1970s. This work brings together on a single disc great musicianship, excellent vocals, incredibly complex themes, and expansive musical development. Caravan was historically one of the most influential bands that defined the Canterbury sound with grand jazz-rock sequences enveloped in their spectacular instrumentation, and "Waterloo Lily" is undoubtedly one of their greatest contributions to the progressive rock style, with a pure redefinition of their creative aspects that gives the listener a clear sense of experiencing a grand musical adventure. However, this album is brimming with dynamism due to the fusion of progressive rock with jazz, stemming from the inclusion of a new keyboardist, Steve Miller. Miller was a fundamental part of that jazz sound with his harmonies and electric piano solos, and he had replaced the more melodic and progressive David Sinclair. An album showcasing fluid guitars, complex and effective bass lines with a touch of improvisation, and, as previously mentioned, a lively jazz piano that at times takes center stage. The LP opens with the playful jazz-rock track "Waterloo Lily", one of the band's most emblematic songs, followed by the suite "Nothing At All", an expansive fusion piece where Miller's piano shines. The solid and powerful "Aristocracy", and the phenomenal and progressive "The Love In Your Eye" are undoubtedly among Pye Hastings' greatest contributions to Caravan's repertoire, where each band member has ample space to shine, with Hastings' guitar and Miller's electric piano being particularly memorable. This extraordinary album concludes with the catchy pop track "The World Is Yours", which, surprisingly, was not released as a single. However, despite the album's enormous quality, it was panned by the band's most purist fans, who considered it too jazzy and far removed from the group's original roots. From then on, the band would undertake their subsequent work with the departure of Richard Sinclair and Steve Miller, two key members whose absence would have repercussions on the following album, "For Girls Who Grow Plump in the Night". Under Pye Hastings' direction, this album saw them return to their melodic sound, characteristic of their earlier work, and adopt a more progressive style, though still subtly distancing themselves from the initial spirit of the Canterbury sound.

Curved Air-Phantasmagoria (1972)

Curved Air's third album defined the artistic rock sound of this important progressive jazz-rock band. "Phantasmagoria" is the follow-up to the exciting "Second Album", released the previous year. This third effort contains some of the group's best compositions and showcases their most advanced progressive passages. The lineup that recorded this album consisted of the classic Curved Air lineup: Sonja Kristina, Francis Monkman, Darryl Way, Mike Wedgwood, and Florian Pilkington-Miska, plus a large contingent of jazz musicians playing flutes, trombones, trumpets, vibraphones, and percussion. The jazzy touches of the opening "Maria Antonieta", the experimentation of "Whose Shoulder Are You Looking Over Anyway", the solid, intricate musicality of "Melinda" and "Not Quite The Same", the progressive musical extravagance of "Cheetah" or the powerful energy of "Over and Above", have enough personality to be considered one of the essential albums of this influential British group.