Nellie McKay comes to Rams Head Tavern at 8 tonight. The performer-singer-songwriter-raconteur is known for her witty comments between songs and vows that she will never repeat the way in which she performs a song, claiming that she forgets her own lyrics. All jokes aside, the comedic artist takes pride in the absence of repetition at her shows. The Mills Family Band will also perform. Rams Head Tavern is at 33 West St., Annapolis. Tickets are $25. Call 410-268-4545 or go to tickets.ramsheadon stage.com.