At the time it came out in 1970, “Jesus Christ Superstar” was unusual. Rock and roll was not typically the music upon which musical theater was based, despite the success of “Hair.” And it was also unusual for there to be no dialogue, for the whole work to be carried out in an operatic format. The original concept album (which I nabbed from my older brother’s record collection and listened to relentlessly as a child) featured the lead vocalist from Deep…
