FRIDAY: >> Throughout this weekend at the intimate space of Twins Jazz on U Street, enjoy some fabulous local jazz at the Alto Saxophone Summit. For $15, you can catch Charlie Young, a professor of music at Howard University, Marty Nau, a local jazz alto saxophonist, and Marshall Keys, who’s played with Lionel Hampton and Branford Marsalis. Tickets can be purchased here. 9 p.m. >> If you recently caught “Broken Flowers,” the latest film in…