Their first LP in 1970 had striking artwork depicting a clock coming out from a croissant, meaning that it was time to wake-up in Spain: The album was called "Why? Máquina!" and it was clearly so rebellious under a dictatorship that fellow group "Tapiman" (founded by ex-Máquina drummer J. Mª Vilaseca, "Tapi", and Barcelona crosstown rivals/friends) answered them with a track called "Don’t Ask Why". The five-piece group developed a high-energy Hammond-driven psych/prog rock with two lead guitarists, with many extraordinary musical moments given the context of those years.
Two years later, the band recorded with a different line-up (both guitarists having left, and including Carles Benavent on bass). It was a live album with a much different bluesier sound complete with a brass section (and almost all new material) reminiscent of Chicago Transit Authority.
- Summer 1969-Winter 1969: Luigi (guitar) / Jordi Batiste (bass, vocals) / Enric Herrera (keyboards) / Santiago "Jacky" García (drums)
- Winter 1969-May 1970: same, change Jacky for "Tapi" (drums)
- May 70: same, Luigi plays also bass, and adding J. Maria Paris (guitar)
- May-August 1970: Luigi / Paris / Herrera / Tapi.
- October 1970-January 1971: Luigi / Paris / Tapi.
- January-February 1971: Luigi / Paris / Tapi / Alvaro Is (organ)
- March-Summer 1971: Herrera (keyboards) / Emili Baleriola (guitar) / Carles Benavent (bass) / Salvador Font (drums) / Carlos Avallone (trombone) / Ricardo Solís (trumpet)
- Fall 1971-Early 1972: Herrera/Baleriola/Benavent/Font/ Juan Mena (sax) / Ramon Mora (trumpet) / Peter Rohr (sax) / Arta (voices)
- May 1972-October 1972: Herrera / Baleriola / Benavent / Font / Jordi Batiste (vocals) / Hubert Grillberger (trumpet) / Peter Rohr (sax)