Am I having a bad day, or is this much harder than usual? I wrote in the "theme" answer at 9d, then all the SW, then...........................apart from a few in the SE and 5a I've been staring at blanks for 2 hours now!
Could anyone get me started again by giving a hint for 2d: Shorter bursts for classical speakers (7), ends in S.
(I would quite like a hint for 1a as well, but I can't give the clue without a spoiler for 9d.)