The ASPM band was founded by Jan Spálený together with Petr Kalandra in 1984. Originally a folk-blues trio, it matured into a crossover quintet. ASPM (Amateur Association of Professional Musicians) is virtuosic on the border of blues, jazz, gumbo and folk genres, which they mix and combine freely. The bandleader of ASPM is Jan Spálený, a musician and storyteller who is the author of most of the songs, a singer and a cornet and piano player.