Symphony Art & Music at 768 Bethlehem Pike, Montgomeryville, Pennsylvania.

It's a nice, cozy establishment offering various lessons in orchestral instruments (violin, cello, trumpet, etc) and popular music (guitar, drums, saxophone, etc). Their rates are not expensive, and the teachers are very nice and qualified-- definitely should give this place a try for lessons. Also sells instruments with dealerships from big companies like Vincent Bach, Con-Selmer, etc.
Sometimes they offer promotions for long-term lesson signups (ex. you get the instrumental rental for free during that period), so call/visit and see what they offer. :)