One Size Fits All features the final version of the Mothers of Invention, with George Duke, Chester Thompson, Ruth Underwood, Tom Fowler and Napoleon Murphy Brock. Zappa continued to tour and record, often with members of previous "Mothers of Invention" lineups. The album features one of Zappa's most complex tracks, "Inca Roads"; the song features unusual time signatures, lyrics and vocals, and is one of the first Zappa songs to use xenochrony. The marimba-playing of Zappa's percussionist Ruth Underwood is also featured prominently. One of Zappa's heroes, Johnny "Guitar" Watson, guests on two tracks (flambe vocals on the out-choruses of "San Ber'dino" and "Andy").
One Size Fits All features the final version of the Mothers of Invention, with George Duke, Chester Thompson, Ruth Underwood, Tom Fowler and Napoleon Murphy Brock. Zappa continued to tour and record, often with members of previous "Mothers of Invention" lineups. The album features one of Zappa's most complex tracks, "Inca Roads"; the song features unusual time signatures, lyrics and vocals, and is one of the first Zappa songs to use xenochrony. The marimba-playing of Zappa's percussionist Ruth Underwood is also featured prominently. One of Zappa's heroes, Johnny "Guitar" Watson, guests on two tracks (flambe vocals on the out-choruses of "San Ber'dino" and "Andy").