Yes, it's one octave below a lowF.... if you want to learn how to bend hole 1,2 and 3, well...this is the challenge!!! So far I can't bend hole 1...the only one I know who could this is Carlos del Junco. He played my lowlowF during his harpworkshop in Trossingen, Germany Ben Bouman www.marbletones.com www.harmonicainstituut.nl