RHYTHMS AND BURGERS: Jack Sisson ‘09’s smooth rhythms as part of the Barbary Coast Jazz Ensemble entertain the crowd at a free barbecue on the Collis porch Thursday.

RHYTHMS AND BURGERS: Jack Sisson ‘09’s smooth rhythms as part of the Barbary Coast Jazz Ensemble entertain the crowd at a free barbecue on the Collis porch Thursday.

Photo: Teresa Lattanzio/The Dartmouth Staff