For the first time ever, the great minds behind Girls Rock Philly are allowing their (slightly) older sisters some time in the spotlight. Over Memorial Day weekend, a group of eight women, 19 and up, will form bands, write songs and, at the end of it all, perform in front of adoring fans at a culminating Tritone showcase, all proceeds of which go toward the summer camp. “Playing music through an amp or hearing your voice through a PA system is a really powerful factor,” says Ladies Rock Camp coordinator Andrea Kuhar, “whether you’re picking up a guitar when you’re 9 years old, or you’re 60 years old and getting behind a drum kit for the first time.” Best of all, the ladies’ tuition transfers that power to the younger generation: Each attendee funds a scholarship for a girl to attend this summer’s Girls Rock Camp.

Mon., May 31, 6 p.m., $5, Tritone, 1508 South St., 215-545-0475, tritonebar.com, girlsrockphilly.org.