Denis, "knock up" sounds sporting (as in tennis) and is therefore quite good misdirection, basically meaning create/concoct (often in cooking or clothes-making), hence compose.
A musical score is quite a well known term for a written mucical composition as well as being a related verb.
Thank you for the other re-clue, and glad to see that these have tested your mettle!
Edited by Lex (01/24/12 02:17 PM)
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Life is what happens while you're making other plans.