Well, my band got started in an odd way. It was like grade 7, and me and my friends weren't really into music at all.

Any one of us, casually: "Let's start a band!"
Me: "I play guitar!"
Luke: "I bet I could play drums!"
Michael: "I guess I could get a bass....."

We saved up all our money for like 2 years and bought instruments. Now we have a band. Not a very good one, but a band nonetheless. The end.