There are more string quartets these days than one can possibly keep up with, but take our word for it: the Daedalus Quartet is among the very best. The young, New York-based group has risen to a high level of visibility for turning in vibrant, detailed, insightful performances worthy of their Juilliard and Harvard backgrounds; the Washington Post even goes so far to praise their “rockets of blistering virtuousity.” Presented by the fantastic organization Russian River Chamber Music, their performance this week is free, donations accepted (and encouraged). Don’t miss it when the Daedalus Quartet appear Friday, Sept. 16, at Healdsburg Community Church. 1100 University Ave., Healdsburg. Free. 7:30pm. 707.524.8700.