I sense that someone copied "Musique concrète" from another source, judging by the lack of space and the capital M. 
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Yeah, I'm not sure how it is with a US keyboard but where I am, you can press the right alt (aka Alt Gr) and a letter, so I can get é without having to go into character map (and ú and ó and stuff), but theres no clear way to get an e with the accent the other way round. And also I wanted to get the spelling of musique right.
I think the top panel is to do with the voices. Like if you want to, say, make the second note in a chord panned slightly to the left or something. I've never really understood it much and it always seems to be more of an annoyance.