Hello Josie,

You are correct, it's transposing. I don't use pitch correcting, if my vocal take is iffy I just sing another one until I get it right (or get enough good parts to assemble into a "right" composite). 6 semitones is an important production mark as it's the farthest a track might need to be transposed to match the key of some huge, existing multitrack arrangement. (7 semitones up is already the same as 5 semitones down.)

There are bigger transposing distances, like, when I want funk guitar to sound jangly, I purposely transpose an octave up etc., but those things aren't usually done with vocals. Anyhow, I deal with transposing all day long in the studio, and all I can say (as the owner of half a dozen transposing products, including Melodyne Editor), Melodyne is not the best quality tool for transposing... anymore. My 2 cents.