An aria in an opera - Handel's 'Ombra mai fu,' for example - gets along with an incredibly small number of words and ideas and a large amount of variation and repetition. That's the beauty of it. It's not taxing to the listener's intelligence because if you haven't heard it the first time round, it'll come around again.

If you're writing a song, you have to write something that can be understood serially. When you're reading a poem that's written for the page, your eye can skip up and down. You can see the thing whole. But you're not going to see the thing whole in the song. You're going to hear it in series, and you can't skip back.

A cabaret song has got to be written - for the middle voice, ideally - because you've got to hear the wit of the words. And a cabaret song gives the singer room to act, more even than an opera singer.

James Fenton Quotes