If you see a pack of teenagers singing, hooting, howling and shouting as they march down Germantown Avenue this weekend, don’t be alarmed. They’re doing it for democracy.
Saturday’s traipse down the cross-city corridor will be led by MIT Media Lab music professor and inventor Tod Machover. It’s one of several meetups Machover has planned when he returns to Philly for another swipe through its aural fabric to collect sounds for his latest undertaking: a semi-crowdsourced symphony called “Philadelphia Voices.” The symphony will be performed by the Philadelphia Orchestra next spring.