Loads of them. Church choir when I was a kid, elementary and high school bands and orchestras (my first instrument was the trombone), college glee club and collegium musicum, various stuff along those lines since then. I was in a big mandolin orchestra for a while; that was a blast. And my coworkers get together a holiday choir every year. I don't always participate, but it's a lot of fun. I really love singing; it hardly matters what the context is. Same question?