"Ya Hozna" includes backward vocals taken from "Sofa No. 2" (from "One Size Fits All", 1975), "Lonely Little Girl" (from We're Only in It for the Money, 1968) and unreleased outtakes of "Valley Girl" (vocals by Moon Zappa). "Planet of My Dreams" (featuring Bob Harris on vocals) is a 1981 studio recording taken from the score of Zappa's unrealized 1972 stage musical "Hunchentoot" (other titles from this show appear on the first-CD edition of the Sleep Dirt reissue from 1993).
As with other Zappa rock albums of this era, many of the tracks are sourced from live recordings. Later studio overdubs were liberally applied, although there is no mention of this on the album notes.