ShredDB is an experimental .shred library, I removed the audio so it's pretty useless. You can find the source .psarc files here.

Song	Artist	Play	Shred	Length	Album	Year	Tuning	Uploader	Updated	Delete
Requiem	Lamb Of God			4:20	Sacrament	2006	Drop D	mute	1970-01-01
Requiem	Mago de oz			8:06	La leyenda de La Mancha	1998	E Standard	mute	1970-01-01
Requiem	Opeth			1:12	Orchid	1995	E Standard	mute	1970-01-01
Requiem	Snot			3:41	Strait Up	2000	AEADG	mute	1970-01-01
Requiem	Thy Art Is Murder			2:23	The Adversary	2010	AEADG	mute	1970-01-01
Requiem	Trivium			4:56	Ember to Inferno	2003	E Standard	mute	1970-01-01
Requiem	Unlucky Morpheus			5:12	Change of Generation	2018	E Standard	mute	1970-01-01
Requiem	Yngwie Malmsteen			4:04	War to End All Wars	2000	Eb Standard	mute	1970-01-01
Requiem (The Fifth)	Trans-Siberian Orchestra			2:56	Beethoven's Last Night	2000	Drop D	mute	1970-01-01
Requiem For A Dream (cover by Peter Gergely)	Lux Aeterna			2:35	SoundTrack	2000	E Standard	mute	1970-01-01
Requiem For Humanity	Inon Zur/Maciej Dąbrowski			3:10	Fallout 3 OST	2014	E Standard	mute	1970-01-01
Requiem For The Nameless Victims	Naoto Shibata			6:14	Perfect Selection: Dracula Battle	1994	E Standard	mute	1970-01-01
Requiem For Youth	Witchfinder General			4:32	Friends of Hell	1983	D Standard	mute	1970-01-01
Requiem K.626 (Lacrimosa)	Wolfgang Amadeus Mozart			2:07	SNK vs. Capcom: The Match of the Millennium OST	1999	E Standard	mute	1970-01-01
Requiem K626. VIII. Lacrimosa	Wolfgang Amadeus Mozart			2:49	The 99 Darkest Pieces of Class	1792	E Standard	mute	1970-01-01