Are there any songs (especially from musicals) that have two sections which are then sung at the same time? one which has 3 parts but they are all the same tune. Any ideas?!
Sondheim uses it a lot in his musicals (often called counterpoint but musicologists may disagree!) - most notably in A Little Night Music with the songs Now, Soon and Later. A trio of songs in Follies too: Rain on the Roof, Ah! Paree, and Broadway Baby end up all being sung together.
I was going to say that if anyone has done it Sondheim probably has because he likes to put complex things in his musicals.
I went to see an amateur production of Sondheim's Sweeny Todd a few months ago and while I found it interesting I found the music so complex, almost as though Sondheim wanted to show off and say "look how clever I am" and look how many notes I have used.
By half time it had done my head in and I could not go in for the second half.
And this is the same man who wrote a lovely "simple" song like "Somewhere" from West Side Story (though he only wrote the words).
Don't want to get into a row about Sondheim but...! He wrote the lyrics to WSS in his 20s, first ever job, and he soon hated most of the lyrics (especially I Feel Pretty) for their crassness, simplicity and inappropriateness. It is the complexity and sheer brilliance of his later works that mark him as a genius. Take the time to get to know the intricacies of Sweeney - you'll find it's unbelievably clever - but never 'clever-clever'.