The artists in the theme clues are playing a joint concert. Their songs flow into each other in the order given in the clues. If an artist's name ends one clue and begins another, their song carries over into the second clue's answer.
Jeff Linder
JeffsPuzzles.com
PuffinlessTravel.com
It-Could-Be-Verse.com
"You got that right away" (often accompanied by a finger point)
19A
Golds (Sp.)
20A
Part 1: Justin Timberlake-AC/DC-Soundgarden
23A
___ noire (bugaboo)
24A
Famous religious sculptures by Michelangelo and others
25A
"____ Hollywood"
28A
Support above a door or window (and a vowel-switching anagram for a common legume)
29A
Part 2: Soundgarden-The Beatles-The Police
32A
Role for which Forest won a Best Actor Oscar
33A
"Langley," for short
34A
Kareem, pre-name change
37A
Part 3: The Police-Otis Redding-Nirvana
44A
Some wading birds
45A
Blacksmiths' work places
46A
It means 2 Down in many romance languages (and in Dutch)
47A
He retired with 696 HRs
48A
Part 4: Nirvana-Grateful Dead
54A
Polynesian staple
55A
Ballroom classification
56A
Disgusting, to a child
57A
Ransom who gave his name/monogram to two different car makes
58A
Writer whose most famous poem begins, "April is the cruelest month ...." (he also wrote other poems that were adapted for an Andrew Lloyd Webber musical)
59A
Stubble spot
60A
Nuisance
61A
Beliefs
62A
Actress/inventor Lamarr
Verticali
1D
"___ poor Yorick! I knew him, Horatio ..." (Hamlet)
2D
Vast
3D
Trebek, for one
4D
One buzzing around getting things done
5D
Massage type
6D
___-nez (spring-loaded glasses)
7D
"I see now"
8D
Pedi partner
9D
____ Festival (major performing arts festival held annually in Charleston, South Carolina)
10D
"Jolly Roger"
11D
Common name of the Union Oil Company of California (or, maybe, what you'd see on the label of a Mexican diet soda?)
12D
Pupils have them
15D
The right side of a nearly impossible split
21D
___ Truman
22D
Cherry or search engine name
25D
Food fish
26D
Food fish
27D
Binders in doctors' offices holding all the forms you have to fill out and sign, which you couldn't do online because their web site wasn't working right
28D
A Hemsworth
30D
CBS procedural
31D
Relatives
35D
Middle of a famous palindrome
36D
Lbs. or Kgs., e.g.
38D
British mail equivalent to "par avion"
39D
"Woe ___" (statement of dismay)
40D
Threaded thing
41D
Many men's briefs
42D
Ungulate foot
43D
Author Louise ("The Nightwatchman," "The Sentence")