1: Felt strangely about unfinished age-old recorder (9)
2: Conducted fight in tent, it's clear (11)
5: A supporter starting to mock President Garfield's middle name (5)
6: Plan to return with woman (3)
7: Senator (IN) flip-flops on this clue and others? (5)
9: Employ new, rare chemical compound (7)
13: I see marks on jumbled party favors (11)
15: Weird corrals; Silver upset (7)
16: Nasty note meant showing you're sorry (9)
17: Minor work taking half a month - an endless epistle (9)
19: Lucifer lived backward (5)
20: Spanish wine from a city in Brazil getting German approval (5)
21: Do as I say in short retreat (5)
24: Managed in lower Antwerp (3)