By 1967, Schenker, realizing that he could not sing and play the guitar at the same time, invited the 15-year-old Werner Hoyer to take the place of the vocalist.
In late 1972 the drummer was Israeli born American Joe Wyman and when he left in December, Dziony came back to complete a tour.
[4] When Eisenhut died and Heimberg left in the summer of 1973, they briefly played with the rhythm section Ewi (bass) and Hal Fingerhood (drums).
[7] Rosenthal left after the recording of Fly to the Rainbow, being replaced first by Jürgen Fechter and later by Rudy Lenners, who performed on In Trance and Virgin Killer.
[12] Michael Schenker briefly returned to the band after being fired from UFO in late 1978, performing on four tracks for the album Lovedrive, although he was replaced the following year by Matthias Jabs who had joined around the same time.