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
Reptile	Periphery			13:59	Periphery IV: HAIL STAN	2019	Custom Tuning	mute	1970-01-01
Requiem	Galneryus			5:16	The Flag Of Punishment	2003	Custom Tuning	mute	1970-01-01
Requiem	Snot			3:41	Strait Up	2000	AEADG	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 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
Reservoir	PUP			3:20	PUP	2014	Eb Standard	mute	1970-01-01
Reservoir (S.O.F.'s Version)	PUP			3:22	PUP	2013	Eb Standard	mute	1970-01-01
Resident Evil Main Theme	Marilyn Manson			2:12	Resident Evil: Music From And Inspired By The Original Motion Picture	2002	E Standard	mute	1970-01-01
Residual Blight	Kriegsmaschine			7:22	Apocalypticists	2018	B Standard	mute	1970-01-01
Resolution	MattyyyM			4:48	SAO: Alicization-War of Underworld OP MattyyyM Cover	2019	E Standard	mute	1970-01-01
Respect Yourself	The Staple Singers			4:59	Be Attitude: RespectYourself	1971	E Standard	mute	1970-01-01
Respiro	Franco Simone	Combo		3:16	Respiro	1977	E Standard	mute	1970-01-01
Rest In Pain (R.I.P.)	Sepultura			4:41	Schizophrenia	1987	E Standard	mute	1970-01-01
Rest In Peace	Extreme			4:41	Rest In Peace	1992	Eb Standard	mute	1970-01-01