Seriously great folks, and accomplished musicians, who care about their students. And the Rock Workshop program is well worth trying -- a wonderful way to get your kid (especially introverts) playing and being creative with others.
Madison Music Foundry is a very fun place to learn how to play instruments, and learn how to use your voice for music. The instructors are fun and very helpful.
Very reasonable rates and great rooms. High quality equipment as well. I've been there twice and will keep coming back. Friendly staff as well.