Young@Heart Chorus I'm totally blown away by the supreme talent of the Young@Heart Chorus, which covers songs by Sonic Youth, Green Day, Coldplay, Jimi Hendrix, and more, and which features seniors ranging in age from 75 to 94. In addition to singing, many group members also dance and play instruments. They describe themselves as a "stereotype-defying, generation-crossing musical extravaganza," which is wholly accurate. The group started in 1982 at a Western Massachusetts eldery housing project as a way to, as they  explain , "joyfully pass the time instead of passing before your time." And boy do they. They've toured dozens of times across the globe, performing all over the United States, Europe, Japan, New Zealand, and more.…