Can't sing so tried GSnap however.....

[Hilary]

Thanks much Hilary! Still putting the musical pieces together on the song but would love to have your fine voice complete the mix!

I've just seen this - synergy 

[Geir]

Since you have some chord-changes that suggest different keys I'd suggest you choose "chromatic" as the scale. Then you don't have to worry about what key you're in.

[T.C. Elliott]

Since you have some chord-changes that suggest different keys I'd suggest you choose "chromatic" as the scale. Then you don't have to worry about what key you're in.

This works when I'm mostly on pitch, but on my bad days then I end up having more off notes than on. 

[Ted]

I just discovered Gsnap myself. You're overthinking it. You don't have to limit it to a single key. If you set it to a 12 note chromatic scale, it will "round" whatever note you sing to the nearest note in the chromatic scale. There are 100 "cents" between every half step. If you hit a note that's off by more than 50 cents, it may round you up or down to the wrong note. But as long as the notes you singing is in the ballpark -- close-ish to the notes you intend to sing -- you should be fine.