The Belgian band Lagger Blues Machine was founded in late 1969 in Flemish Brabant by the brothers Christian Duponchell on organ and Jean-Luc Duponcheel on drums, together with guitarist Jose Cuisset and bassist Michael Maes. After several years of intensive touring on the Belgian club circuit and a highly acclaimed performance as the support act for Wishbone Ash, they not only became one of Belgium’s most significant bands but were also signed by the major label CBS. As the band name suggests, they first played blues and blues-rock. When Vincent Mottoulle joined as an additional organist and the flautist and saxophonist Carmelo Pilotta joined the quartet in 1971, the musical focus shifted towards an inventive, progressive and psychedelic rock sound that was no longer derived solely from blues or jazz-rock fusion.

They finally recorded their only eponymous album in 1972, which was released by CBS exclusively in Belgium with a provocative cover image. They played a predominantly instrumental, complex form of progressive rock with occasional jazzy elements, reminiscent of the leading bands of the Canterbury scene. Unfortunately, the album, which was released in only a small edition, failed to achieve success. Nevertheless, the band continued to tour for several more years. They finally disbanded in 1975.