If you are in Boston for the summer, you must come out to see local favorites Firedrill! and Hyannis Sound on a Boston Harbor boat cruise. Thats right...they'll be performing live sets on an evening boat cruise through Boston's dirty water. There are 2 shows, 6pm (all ages) and 10pm (21+). Tickets are going fast - this is going to be the a cappella event of the summer! Check it out at www.rockandbluescruises.com.