I know this was asked a long time ago but maybe it's helpful to someone else. Groove Music on Sungai Dua (near Tesco and next to that Indian restaurant place) gives all kinds of lessons (drums, singing, guitar and others). Singing lessons are $25 for an hour, that's what I'm taking. There's rooms for drums and guitars and whatever, I jam with the guitars before my singing lessons..if you are that chinese dude who has his lessons before me, let me know if you hear my playing / it bothers you and I'll stop =D

Groove Music Sdn Bhd
Bangunan Lip Shin 2-2-3 Lebuh Pekaka
Sungai Dua, Gelugor, Penang
Tel: 04-658 5866