Thanks.
May as well finish them...
10a) Emergency operation for learner in first-rate division (7)
A-R-I-T
12a) Party putting 20 to sleep(4)
U-I-
20a is "uruguay"
8d) Tale about revolutionary songs (6)
L-E-E-
18d) Standard look also included, musically speaking (8)
-A-L-N-O
"rallento", maybe? No idea why, though.
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