Saturday Happenings

-- The Revere High School Rock Ensemble, ten student musicians, would like to welcome you to the machine. The group has been rehearsing Pink Floyd's The Wall in its entirety for the past year and finally performs it tonight. Revere High School, 101 School St., Revere, 7 p.m. $6.

Bhangra

-- The Boston Bhangra competition pits Bhangra crews from the United States and Canada against one another to see who can throw down the most flamboyantly. The winner will be the Boston Bhangra Champion and, by implication, the Bhangra Champion of the Universe. Orpheam Theatre, 5 p.m. $15-$40.