Though jazz pianist Randy Weston left New York City in 1967 to live in Morocco and specialize in African rhythms, he remains indebted to the American masters. Now 84, Weston is one of the few living masters of jazz piano enjoying a still-expanding creativity; he pays tribute to Duke Ellington in a solo piano performance and signs copies of his autobiography, African Rhythms, on Saturday, April 16, at the Napa Valley Opera House. 1030 Main St., Napa. 7pm. $35–$40. 707.226.7372.