Tablas, sitars, didgeridoo bamboo flute, and electric guitar. All are instruments that have been featured in the work of Ancient Music, an internationally renowned Bay Area–based band that has been playing world fusion for almost 40 years. See two members of the group perform on guitar and Arabic percussion during two free 60-minute concerts on November 8, the first at 5 p.m. at the Healdsburg Library in Healdsburg and the second at 7 p.m. at the Windsor Library in Windsor. To find out more about the group, see ancient-future.com/bandmain.html; for concert details, see sonomacounty.libcal.com and facebook.com/matthew.montfort.music.