Can anyone tell me anything about the female backup singer(s) for ELO? I do not have an ELO record collection - the albums are not particularly common here in the American Southwest - and the official info, as epitomized in this website, gives her/them little or no credit, though in most of the great songs the female backup is an integral part of the sound.

I saw ELO in concert on PBS, and there was a lovely woman standing behind Jeff, whiling away the time between her cues by swinging her long, long blonde hair in time to the music. Ever since, I've been kind of nutty on this subject. Any info would be appreciated.