Best known for being an American Idol contestant, Constantine Maroulis has been staying busy with television appearances and releasing his self-titled album. Maroulis has covered the likes of Nickelback and Queen on American Idol and will be performing his own rock songs at the Rams Head Tavern, 33 West St. in Annapolis, at 7 p.m. Monday. Tickets are $25. Call 410-268-4545 or go to ramsheadtavern.com.