Catch the cool vibes at World Cafe Live Jazz Jam with Orrin Evans featuring trumpeter Thomas Marriott. Headliner, Grammy Award-nominated Orrin Evans, a fiercely independent pianist-composer-producer, and his house band will do their thing and perform. They will set the stage and invite a rotating lineup from Imani Records to jam. Instrumentalists and vocalists also can sign up and sit in throughout the lively impromptu sessions. Free but pre-register, and also make reservations to ensure seating. Without a reservation, seats will be assigned on a first-come basis. 8:30 p.m. EST to 11:30 p.m. EST. The Lounge at World Cafe Live, 3025 Walnut St. To make a table reservation and guarantee seating: 215-222-1400 or click here or worldcafelive.org.