Wren, you're lucky. My parents aren't really musically-inclined. My mom pretty much listened to Dan Fogelberg exclusively.
My mom is musically-inclined but she's got an obsession with The Beach Boys. They are the only band I can recall her listening to on a regular basis. They're the first band I can recall singing and dancing along to, so I guess I'll have to say they (and my mom) were the ones who lit my music-loving fire.