We also have a live version recorded in 1974 on Day After Day (CD 10881) and a guitar score in The 1970s Guitar Big Book (MP125.A17 B5). As you can research in the Academic Charts Online database, the single peaked at No. 14 in the U.S. Billboard chart on April 28, 1972.
No spoilers here on how the show concluded, but lots of people are talking about that song.