With countless 1970s Europrog and Krautrock bands like Nektar, Can, Gong, and Comus reuniting, making new records and touring, it’s little surprise that psychedelic stalwart Faust is back again with a new album, Fresh Air, serving up live and studio recordings from a 30-day U.S. tour undertaken in 2016. Founding duo Werner “Zappi” Diermaier and Jean-Herve Peron first broke up the band in 1975, after major label Virgin Records rejected their fifth studio album. However, collectors continued to swap and circulate their adventurous cosmic-centered songs, with several boutique labels putting out unreleased and bootleg tracks and albums that helped elevate the band into somewhat of a cult strata. They reunited in 1990, though they didn’t start recording again for a few more years, and both Diermaier and Peron are still fronting the current incarnation of the legendary prog innovators, due to play the Casbah on July 29. The bill includes locals Featherstone and Duuns.