The Tex-Mex Rio Grande Cafe (12 School St., 781/639-1828, 5:30 p.m.–10:30 p.m., Sun.–Wed.; 5:30 p.m.–12:30 a.m., Thurs.–Sat.) presents live blues and rock on the weekends.
The highlight of the social calendar, however, is Race Week (www.mheadrace.org [1], late July), when some 200 boats descend on the area for regattas in the harbor and parties on shore.
Links:
[1] http://www.mheadrace.org