'One Size Fits All' is the 1975 rock album by Frank Zappa and the Mothers of Invention. It is the tenth and last studio album of the band, and is Official Release number 20. Frank Zappa was an American musician, bandleader, songwriter, composer, recording engineer, record producer, and film director. In a career spanning more than 30 years, Zappa composed rock, jazz, orchestral and musique concrète works. 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.