Sight-singing answer: “Taps.”

Across 
1- Knife STAB
5- Disney dog SCAMP
10- Sparkling wine ASTI
14- Swan lover LEDA
15- Data structure ARRAY
16- Competed VIED
17- Russian motorcycle URAL
18- Reed condition, usually MOIST
19- Airline to Ben Gurion ELAL
20- Mobster’s date? GIRLHOOD
22- Rush headlong HURTLE
24- Pike’s place PEAK
25- New York daily POST
26- New CT town CANAAN
29- Warner record label NONESUCH
33- Siren, e.g. ALERT
34- Hip agreement SOLID
35- Non-Impact Aerobics NIA
36- Warlike board game RISK
37- Retinal nerve OPTIC
38- Crown Victorias LTDS
39- Old soldier VET
40- Studies hard CRAMS
41- “_____ Nights” QUIET
42- Settle securely ENSCONCE
44- Diner EATERY
45- Dies ___ IRAE
46- Vic’s wife, or the singer SADE
47- Method SYSTEM
50- Bounty protester MUTINEER
54- Serve wine POUR
55- Take the honey and run ELOPE
57- Rick’s love ILSA
58- Australian Greyhound Racing Assn AGRA
59- “Twelfth of _____” NEVER
60- “____ That Bass” SLAP
61- Omani money RIAL
62- Opera balconies TIERS
63- Kind of ology TAUT

Down 
1- Fake coin SLUG
2- Drummer Carrington TERI
3- Purim’s month ADAR
4- Brand of franks BALLPARK
5- Island language SAMOAN
6- “I am not a _____” CROOK
7- Saharan ARID
8- More for Candido MAS
9- Like Spamalot PYTHONIC
10- Fends off AVERTS
11- River sediment SILT
12- Bluey-green color TEAL
13- Eric (see 9 down) IDLE
21- Kind of sink HEAT
23- Accustomed (to) USED
25- Ancient Greek city-state POLIS
26- Out play at a jam session CARVE
27- Otherworldly ALIEN
28- Fits snugly together NESTS
29- Who done it? NOTME
30- Save the heroine UNTIE
31- Hard drink CIDER
32- Type of pudding HASTY
34- Last frontier SPACE
37- Musical embellishment ORNAMENT
38- Bill Zito, e.g. LUTENIST
40- Zoot’s tune “Apple ____” CORE
41- Muslim judge QADI
43- Lemon grass extract CITRAL
44- “The Lotus ______” EATERS
46- ____ Sax SUPER
47- Varnish variety SPAR
48- Berra YOGI
49- Babylonian city SURA
50- Denzil Best tune MOVE
51- First Lady of Song ELLA
52- Jacob’s twin ESAU
53- Engrossed RAPT
56- Aloha go-with LEI