The 100th installment of Salsa Fridays will be celebrated by the Pittsburgh Cultural Trust at 10 p.m. Friday with a big ’70s theme bash. Established in 2008, Salsa Fridays is the dance party held Friday nights at the Cabaret at Theater Square, 655 Penn Ave. Attendees are encouraged to don nostalgic tie-die, flared jeans, peace symbols and sandals for a ’70s dance party with a Latino flavor. Admission is $5 at the door. Call 412-456-6666 or visit www.pgharts.org.