Nice puz! Loved the theme (moderately surprised I knew all of the themers), great MARIO/LUIGI schtick, and- WHAT?! I JUST LEARNED THAT REST TRICK IN MUSIC THEORY LITERALLY LAST PERIOD
What Mr. Rogers always left on when he changed his jacket and shoes
32A
Don't pass "Go" on your way here
34A
Carmen Miranda's genre
37A
*We don't discuss them in front of guests
40A
Vodka brand, informally
41A
"If/then" tag-along, in software
42A
Elvis Costello's was true, on his 1977 debut album
44A
Intones
46A
Lift
47A
*It comes from a bud
50A
See 62-Across
52A
Shared between us
53A
They're often unconscious
56A
Comfort food for nostalgic millenials, e.g. this puzzle's starred entries
62A
___ the Living 50-Across: appropriately-named narcissist played by Kurt Russell in "Guardians of the Galaxy, Vol. 2"
63A
In the US in 2021, 87.6 million of them were devoted to 61-Down production
64A
Chico and Groucho's brother
65A
Serve (on a committee)
66A
Start again from 0
67A
"Hillbilly _____": 2020 film that earned Glenn Close an Oscar nomination for Best Supporting Actress and a Razzie nomination for Worst Supporting Actress
Down
1D
Certain tree, or certain remnant after destroying a tree
2D
Jennifer Lopez or Ben Affleck, astrologically
3D
Genre for Diplo or Marshmello
4D
Reacted to shocking news, perhaps
5D
Attempts
6D
Coulombs per second
7D
Tequila-based cocktail, slangily
8D
Geometry assignments
9D
"That Thing You Do!" star Tyler
10D
Fair-hiring letters
11D
Stayed home for dinner
12D
Like many bodies at the gym
13D
Canadians with mixed Indigenous and European ancestry
18D
Denali and Kilimanjaro: Abbr.
19D
"______ in St. Louis"
22D
Work in the West End, perhaps
23D
Hairdos
24D
Striker's spike
26D
Whole ones looks like holes; half ones looks like hats
27D
Like a headless pirate?
29D
Acronym for many 17-Across projects
30D
Name on many a glue bottle
32D
Leaves at the altar
33D
Bush Jr. appointee Samuel
35D
Companion to a Criminal, Princess, Athlete and Basket Case, in 80s film
36D
Onstage parenthetical
38D
It's whipped into shape?
39D
Green and Gore
43D
Nickname for the opera company that, in 2021, finally programmed a work by a black composer with Terence Blanchard’s "Fire Shut Up in My 47-Down"