I was expecting to see Schenker when I bought tickets to see UFO in Long Beach (CA) in ‘79, but he had recently quit or was fired or something. Don’t know what happened. That year was tumultuous for him. He was replaced by Paul Chapman on guitar, who was ok, but no Schenker.
UFO’s live release from Jan of ‘79, Strangers in the Night, is still one of the best live rock albums of all time, imo. With Schenker, of course.
When UFO was mixing the live album 79, the record company demanded Michael re-record his solos on the live tracks. He refused and quit the band. The original solos remained unchanged. Regardless of what the record company thought, Strangers in the Night is definitely one of the best live rock albums and there may be a few little hiccups with solos but that is typical for high energy live performances