Puzzle

 ACROSS

  1 Like karaoke music

  5 Big ___ Wolf

  8 Wax-coated cheese

 12 Sinister

 13 Exasperated

 15 "Love you, bye!"

 16 Lyft alternative

 17 Bill attachment

 18 "That was close!"

 19 Make out, in Britain

 21 Strenuous effort

 23 Bowler's measurement?

 26 Way to pick things up without trying, so to speak

 30 Scarf down

 31 Vital arteries

 32 Measuring stick's length, often

 33 "The Master Builder" author Henrik

 37 Bombeck who said, "God created man, but I could do better"

 38 Popular succulent

 39 Jotted down

 40 Falls prey to decay

 41 Highs' counterparts

 42 100 Swiss rappen

 43 "Git!"

 44 Some Android phones

 45 Skeptical about

 47 Luke, to Anakin

 48 She shared an awkward kiss with Luke

 50 Salt's formula

 52 Poet with a famous line that the rhymes in 13-, 14-, 25- and 27-Down hint at

 57 1966 title role for Michael Caine

 58 "The ___ Who Cried Wolf"

 59 Like most pet birds

 61 Naysayer, say

 62 December 24 or 31

 63 White as a sheet

 64 Deep gulf

 65 Common color for the flower that this puzzle hints at

 66 Bright fish

DOWN

  1 Sink below the horizon

  2 2019 NCAA basketball champs

  3 Put the kibosh on

  4 Sliding ballet steps

  5 Neutral color

  6 Insert

  7 On account of

  8 They may make maps

  9 (Facepalm)

 10 Tool thrown at a target: Var.

 11 Do a lawn chore

 13 Reacted to seeing a snake, perhaps

 14 Items in a decision-making list

 20 Zilch

 22 Texter's qualification

 23 "Howdy, everyone!"

 24 Not digital

 25 Pitches like a southpaw

 27 Less boozy Pabst brew

 28 "You are not!" comeback

 29 Put in some quality thyme?

 34 Use a drill

 35 Yelp review unit

 36 Word in a counting rhyme

 45 Water bottle capacities

 46 One swimming in money

 49 Great Lakes natives

 51 Bring to an end

 52 Dollop

 53 Lyft alternative

 54 Peaceful bird

 55 Watched carefully

 56 ___-do-well

 57 "A Wrinkle in Time" director DuVernay

 60 Molecule that Rosalind Franklin studied: Abbr.

Solution