You run into some guys on the street whom are playing guitar, you recognise them from your school (you're in high school) and you guys start talking. After a little the conversation moves to music and bands, and you somehow end up joining a band with them. You're the lead singer, and one of them plays bass, the other electric guitar. You eventually get another person to join the band too, and they play the drums!!

have fun, and good luck with your new band!!!