R-rated classical music

Just in time for Mother's Day, the BSO presents Stravinsky's Oedipus Rex - which gives Tim Jarrett, who will be part of the performance's chorus, an interesting conundrum: A co-worker says the concert sounds interesting for his 13-year-old daughter, who's taking voice lessons; should Tim recommend he get tickets, given the subject matter?

... Stravinsky wrote some of the most amazingly inventive, sinuous melody lines for this work, which sports a libretto by Jean Cocteau. I think my personal favorite is the herky-jerky chromaticism of the passage where Oedipus batters down the door, kills his mother/wife, and puts out his own eyes. ...