Way to go Puppet,
How to confuse the lack of age challenged.
Carly Simon did at some point team up with another famous singer songwriter, and both recorded each others songs to great success.
However the secret song in

is carly's and refers to an earlier actor partner, so the story goes.
Paul Simon + Art Garfunkel
Peter Paul and Mary.
Confusing Mary for Simon, there's that gender variation again. Plus Art G, is Gay according to some sources. Peter/son sub for Robin/son
peter(male) Robin(non specific)
So all these subliminal messages in this thread, What are you infering?