Alan Broadbent – Darek Oles Duo When: Sunday, Aug. 7 Time: 7 p.m., one show only Where: Paul Mahder Gallery, 222 Healdsburg Ave. Tickets: $25, SOLD OUT. Alan Broadbent, whom Charlie Haden called “one of the most original improvisers in the world of jazz,” will perform for one night only in Healdsburg at the Paul Mahder Gallery, on Sunday, August 7. He will perform in duo format with bassist Darek