Fun around town, for $10 or less: Jazziest: Book release party for Ben Ratliff's The Jazz Ear featuring critically-acclaimed Philadelphia pianist Orrin Evans, presented by Ars Nova at the International House (3701 Chestnut), 8PM. Free Constantine's Sword: Screening of Constantine's Sword as part of the Jewish Film Festival at the Gershman Y (401 S Broad), 7PM. $10 Open Mic: Free at The Fire (412 W. Girard). Sign up at 8:30PM. (21+) Sing Your Life!: Karaoke......

Fun around town, for $10 or less: Love Songs: Dolce Suono Chamber Music Concert Series presents Love Songs: A Valentine’s Serenade at the First Unitarian Church of Philadelphia (2125 Chestnut), 7:30PM. Free Lopez: The Lopez, The Dollyrots, and Percocettes at the North Star Bar (2639 Poplar), 8PM. $8 Jazzy: Ars Nova presents Ben Ratliff, author of the new book “Coltrane: the Story of a Sound,” speaking on jazz history at the Kelly Writers House (3805......