My father is looking for a Jewish song from the 70’s- it was about the Baal Shem Tov, maybe called "He was a Holy Man"?

He thinks it was made by the Diaspora Yeshivah Band or another Orthodox Jewish band from the 70’s. He can’t remember the exact title, but the lyrics he remembers are “There once was a holy man/the Baal Shem Tov was the name he took”. It was likely a rock/folk song.

Unfortunately I don’t have any more details but he’d be really happy if I could find it for him. Any help would be appreciated.