I don't know what's going on Malone, I really don't.
One set of the clashing letters give the name of a film that's theme was written by the world famous 4, 8, the music of which has a violin part whose notes, in relation to each other, match the positions of the clashing letters in the grid but, as I said, while the set of letters that aren't used in the film title are all notes, they are not those shown in the sheet music on Google.
Regards the "magnificent 7' - I can't think of any sporting event over the last week or so that bears any relation to this or where 7 of anything happened. There was the rugby, but that's six nations. There was a 7 goal thriller between Man U and Liverpool, but that was played on the same day the puzzle was printed so, unless Gaston has a crystal ball, it's not that.
To be honest, I'm losing the will to live so am going to admit defeat on this one... although I might watch the film tonight:-)