ACROSS
1 Go away after vocalist holds dissonant chord—is it live or not? (12,3)
9 Wearing jeans, I cut out a book of the Bible (9)
10 Ass-backwards—or dark red, for the most part… (5)
11 …for a tangled hairstyle (4)
12 Beggar with a mischievous spirit taking over (9)
14 Freud, deranged, conceals location of mammary glands (5)
15 Depression-era dryness that is moving south to east (8)
18 Disk storage in a computer holding Trebek’s test (4,4)
20 In westbound flight, LAX elicits praise (5)
23 Musical child adopted by extremely merry sprite (2,4,4)
25 Smell of decaying door (4)
27 Take up blackmail, ultimately, to make money (5)
28 I showed up late, in underwear, in a French restaurant (9)
29 Football team eats in, with some…