All songs are "Clean for In-Store Play" versions. This disc was issued in a cardboard slipcase cover. A must have for any FZ fan. Released as the “Clean American Version,” this sanitized fz sampler was sent to record stores/cd shops so they could play Zappa’s music in the store without the fear of some angry Mommy complaining that the music would curve her baby’s spine. A great compilation (even if the songs have been bastardized).