Betsy Leighton and Jill Teas want you to come sing with them.

“We started about five years ago with twenty people singing in a bar,” says Leighton, creative director of Voice Rock!, a collection of adult choirs focused primarily in Denver. “We are now up to more than 400 singers. I have a master’s in social work, and what I’m finding is building community through singing rock songs together is kind of better than anything I tried before.”