Distinguished older gentlemen sit in neat rows beside ladies with fans dressed in their Sunday best — if it weren't for the posters of Duke Ellington, Wycliffe Gordon and John Coltrane adorning the walls, it would be easy to mistake the A Frame for church. It's not, but on Sundays once a month, the living room of Betty Hoover's Hollywood Hills home becomes an intimate venue — improvised, like the best jazz — where guests can listen to world-class artists play, and chat them up over an egg salad sandwich afterward. A donation of $45 to $50 buys entry to the show, lunch and drinks. Just remember the house rule: The musicians always eat first. 1821 Sunset Plaza Drive, Hollywood Hills. email@example.com, aframejazz.com.