A delightful look at the Young@Heart Chorus, New England senior citizens who sing such unconventional songs as James Brown's "I Feel Good," the Clash's "Should I Stay or Should I Go," the Ramones' "I Wanna Be Sedated" and Sonic Youth's "Schizophrenia," as they prepare for a concert in their hometown of Northampton, Mass., under the guidance of longtime musical director Bob Cilman. Other songs include Coldplay's "Fix You" and Prince's "Nothing Compares 2 U."