There are endless channels and more stuff right now than ever before, and I always think that while there’s more bad stuff, there’s also more good. The math says it must be the richest time ever. But then I watch this one-hour 1972 NYC studio concert by Stevie Wonder and try to think of any pop music today that knocks me out this way. The final 14-minute jam beginning with “Superstition” is complete tour de force. Of course, I may be partial since the first record I ever owned as a child was a Wonder greatest-hits compilation.