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
Re-Animation	Sacrifice			3:51	Forward To Termination	1987	Eb Standard	mute	1970-01-01
Rebellion	Grave Digger			4:08	Tunes of War	1996	E Standard	mute	1970-01-01
Rebellion (The Clans Are Marching)	Grave Digger			4:08	Tunes Of War	2006	E Standard	mute	1970-01-01
Rebirth of Humanity	Bolt Thrower			4:11	War Master	1991	C# Standard	mute	1970-01-01
Red Horizon	Omen			3:38	Warning Of Danger	1985	E Standard	mute	1970-01-01
Released	Norther			4:11	Dreams Of Endless War	2002	E Standard	mute	1970-01-01
Repellent	Hail The Sun			3:37	Secret Wars	2017	E Standard	mute	1970-01-01
Reptile	Nine Inch Nails			6:51	The Downward Spiral	1994	Drop D	mute	1970-01-01
Requiem	Yngwie Malmsteen			4:04	War to End All Wars	2000	Eb Standard	mute	1970-01-01
Resolution	MattyyyM			4:48	SAO: Alicization-War of Underworld OP MattyyyM Cover	2019	E Standard	mute	1970-01-01
Revenge of the zombie	Six Feet Under			2:52	Warpath	1997	D Standard	mute	1970-01-01
Rhodian Pride Lindian Might	Macabre Omen			5:39	Gods of War At War	2015	D Standard	mute	1970-01-01
Ride the Flames	Certain Death			4:39	The Burnt war	2016	D Standard	mute	1970-01-01
Right Time Of The Night	Jennifer Warnes			2:56	Jennifer Warnes	1976	E Standard	mute	1970-01-01
Roads To Madness	Queensryche			9:43	The Warning	1984	E Standard	mute	1970-01-01