It’s First Friday at the Camel, and the Dirty Grass Players from Baltimore play toe-tapping traditional bluegrass with blazing musicianship. The four-piece band won the Charm City Bluegrass and Folk Fest competition. It performs at 9 p.m. $10. Note: Earlier in the evening, the Slack Family Bluegrass Band plays at 6 p.m. thecamel.org.