The Disco Biscuits—Penn’s own jam band of the 1990s—have a new sound (some call it Bisco), a different (and non-alumnus) drummer, and a growing fan-base (“this whole, like, people-following-us-around-the-country, circus type of thing”). Their headlining performance at this summer’s Jam on the River at Penn’s Landing may have been their most memorable ever—even if it was shut down after only 30 minutes.