Revathi, the self-appointed leader of the group, mouthed, "One, two, three, four." Manik started on the bass guitar. The audience recognized the prelude to the India waale, a current hit. Diminutive Jasleen, probably the most accomplished player of the group, was next, on the drums, picking up the beat. Revathi and Aayush joined in on keyboard and guitar at the same time. It was amazing to see them responding to each other. Theoretically, autism made it difficult to have group ...