Summer alive with sounds of 'Sweeney Todd' and R&B and classical music festivals

Seattle Opera and Seattle Youth Symphonies co-host a collaborative performance series around the state of “Our Earth,” a trilogy of new operas by Eric Banks and Irene Kelieher. The musicians perform locally as part of the Marrowstone Music Festival at 7:30 p.m. Aug. 1 at Western Washington University’s Performing Arts Center.