Optimistic Voices (Wizard of Oz song)

Okay, wide vibrato, soprano voices, recording technology, The Debutantes and The Rhythmettes. Thanks for the input.

I mentioned ELO; here’s another one that sounds similar to me:

I had to laugh yesterday when I found myself wondering if women can have falsetto voices; as if it were something I should have asked my father about. Interestingly, it turns out that, until research in the 1950s proved otherwise, it was thought that only men could have falsetto voices. Although the link is just a Wikipedia entry, I’m willing to believe it without checking other sources, but I admit I’m not sure if I’ve ever heard a female falsetto voice, if it’s something I’d be able to detect and even if it has anything to do with Optimistic Voices.

So, do you think they’re singing with falsetto voices?