1: Walking nicely as a dog's getting well vocalized (7)
4: 'I'm at the top! I am chairman of Chrysler Corporation of America.' (7)
8: Bumpers, e.g., aren't so damaged (7)
10: Ridicules unnecessary bobtail (7)
11: Tribal emblem starts to take on taboo, erotic meaning (5)
13: Write down 'In mink, not frozen'? (9)
15: I'll be stuffed if I'll deal with him!. (11)
16: 4-down Arias hit high note in some of the lungs (3,3)
18: Mr Stewart on the staff (3)
19: A favourite car of Seattle natives. (11)
21: Tool placed under sack as a safety precaution (4,5)
23: How Nero holds one in control (5)
24: Alien in spa written up for 'a display of greenness'? (7)
26: Turncoat's quality: amoral heart (7)
28: Settler rearranged alphabet components (7)
29: Play faster in last 3/4 of piece with bass held backward (5,2)