Each season of LEAF (Lake Eden Arts Festival) has its own flavor. Not a theme, per se, but certain threads that run along the lines of world beat, folk and Americana sounds. This time around? Roots-informed heavy-hitters like The Mickey Hart Band, The Tony Rice Unit, The Be Good Tanyas and Sol Driven Train. Also check out Tinariwen (a band of Tuareg-Berber musicians from the Sahara Desert), local artist Jonathan Scales and MC Yogi (who combines hip-hop with Hindu devotional chants). Fall LEAF runs Thursday-Sunday, Oct. 18-21. Tickets are available in advance only, through Wednesday, Oct. 17. Weekend plus (includes Thursday night and camping) are $179 for adults /$149 for kids. Weekend tickets (with camping) are $155/$130. Day tickets (no camping) are $103/$91 for the weekend, $45/$37 for Friday or Sunday and $55/$48 for Saturday. http://www.theleaf.org. Photo of Jonathan Scales by Jon Leidel.