How many octaves does David Bowie's voice range?

New answer: The highest note (to my knowledge) ever sung was high G#5 in the closing notes of Lady Grinning Soul (Aladdin Sane album, 1973).

And the lowest is a C2 in the opening line of Sweet Thing (Diamond Dogs album, 1974).

For the

skeptics who have accused Bowie of vocal tinkering in the studio, there is a YouTube video of a live performance from the era, here

YouTube.com/watch?v=D1j9sD3mHJE">http://www.YouTube.com/watch?v=D1j9sD3mHJE where he sings the low C quite clearly, and live.