Yes, voice lessons are on my list. I've been practicing with a vocal warm up CD and try to sing everything I play. Sometimes I do crazy stuff like just play one hand of a Bach invention and sing the other hand.

My pitch is pretty good. I studied ear training/sight singing in college using solfeo. My tone isn't good at all... I have what I consider a functional voice. I can sing a part and the pitches are good but no style/tone/vibrato....

I got the Harmony M to help "color" my voice a bit for solo gigs and help on background vocals in a dou (with a real singer) Hopefully it well serve that purpose well.