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.

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.