What is the BPM for by ?

The tempo for is 144 beats per a minute with a half-time of 72 BPM and a double-time of 288 BPM.

What is the music key for by ?

The music key for is B Minor or a camelot key of 10A.

Track	Artist	Key	Energy	Camelot	BPM
Springtime for Hitler - Part I	Mel Brooks, Various Artists, John Barrowman, Uma Thurman, Bryn Dowling, Meg Gillentine, Nathan Lane, Matthew Broderick, Will Ferrell, Gary Beach, Roger Bart, Patrick S. Brady	D Major	4	10B	68 BPM
Trololo Song	Mr. Trololo	G Major	6	9B	97 BPM
La Donna E Mobile	Italian Mandolin Torna A Surriento	C Major	3	8B	130 BPM
Pennsylvania Polka	Frankie Yankovic And His Yanks	F Minor	7	4A	125 BPM
Rose - From "Titanic" Soundtrack	James Horner	F Major	0	7B	167 BPM
Downtown	Petula Clark	E Major	5	12B	118 BPM
Adagio	Secret Garden	G Minor	3	6A	51 BPM
Song From A Secret Garden	Secret Garden	C Minor	3	5A	67 BPM
Merry-Go-Round of Life - from 'Howl's Moving Castle'	Joe Hisaishi	G Minor	3	6A	72 BPM
Happy Together	The Turtles	F♯ Minor	4	11A	120 BPM
Casino Royale Theme	Herb Alpert	D Major	5	10B	137 BPM
Io Sono Un Gentleman	Gianluca Marino, Kalanera	F Minor	5	4A	120 BPM
Hot Stuff	Donna Summer	B♭ Minor	8	3A	121 BPM
Mr. Lonely	Bobby Vinton	E Major	3	12B	84 BPM
Quando Quando Quando	Engelbert Humperdinck	C Major	6	8B	176 BPM
Sugar Sugar	The Archies	D Major	4	10B	122 BPM
Love Story in Italy - Gianluca Marino	Gianluca Marino	C Major	5	8B	138 BPM
Fernando	ABBA	A Major	5	11B	111 BPM
You've Got a Friend in Me	Randy Newman	C Minor	3	5A	116 BPM
Macho Man	Village People	F Major	8	7B	134 BPM
Tarantella Medley	Al Caiola	G Major	7	9B	135 BPM
Sad Romance (a.k.a. Sad Violin)	Ji Pyeong Kwon	A Minor	2	8A	76 BPM
Adagio for Strings, Op. 11	Samuel Barber, Leonard Bernstein, New York Philharmonic	B♭ Minor	1	3A	88 BPM
It's Not Unusual	Tom Jones	D Major	9	10B	116 BPM
Rasputin	Boney M.	A Major	9	11B	126 BPM