. >> reporter: a sometime musician and entrepreneur, mitch mcmillen founded the camp and is still amazedet so many people who are glad he did. >> there are tons all over the country. as of right now, we've been doing this for six years, and we have over 800 members. >> reporter: jean jarvis is a guitarist when she's not working with animals. laurie etchen is in marketing and singing. >> i think she's definitely the extrovert. >> reporter: but the introvert i'm told, goes kind of nuts on stage. is that what happens to you? >> well, i don't know nuts. >> reporter: dying one's hair blue and downing shots before the big gig sort of does fit that description, though. no one is going to confuse their stylings with big-name entertainers, but for one shining night, these babies can really boom. dean reynolds, cbs news, st. louis park, minnesota. >> axelrod: and that's the "cbs evening news" for tonight. later on cbs, "48 hours." for now, i'm jim axelrod in new york. and for all of us here at cbs a news, thanks for joining us and good night. captioning sponsored by cbs captioned by media access g