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
Redeemer	Bury Tomorrow			4:35	The Union of Crowns	2012	D Drop C	mute	1970-01-01
Redemption	Shadows Fall			4:20	Threads Of Life	2007	Drop D	mute	1970-01-01
Reduced To The Failure Of Prayer	Skeletonwitch			2:55	Forever Abomination	2011	E Standard	mute	1970-01-01
Refuge	Jake Howsam Lowe			5:25	Oh Earth	2019	Eb Standard	mute	1970-01-01
Regenerate	We Came As Romans			3:50	Regenerate	2015	Custom Tuning	mute	1970-01-01
Regret	Drowning Pool			3:16	Drowning Pool	2010	C# Drop B	mute	1970-01-01
Regret 1993	New Order			4:11	Best Of	1994	E Standard	mute	1970-01-01
Regurgitated Disinformation	Job For A Cowboy			4:52	Ruination	2009	D Standard	mute	1970-01-01
Rehab	Amy Winehouse			3:39	Back to Black	2006	E Standard	mute	1970-01-01
Reignite	Killswitch Engage			3:03	Incarnate	2016	Drop D	mute	1970-01-01
Reincarnate	Motionless In White			3:42	Reincarnate	2014	B Drop A	mute	1970-01-01
Reindeer Age	Closure in Moscow			3:58	First Temple	2009	D Drop C	mute	1970-01-01
Reject Yourself	Killswitch Engage			4:50	As Daylight Dies	2006	D Drop C	mute	1970-01-01
Rejection	40 Below Summer			4:03	Invitation to the Dance	2001	C# Drop B	mute	1970-01-01
Rejection Role	Soilwork			3:37	Figure Number Five	2003	B Standard	mute	1970-01-01