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
Raze	Exodus			4:18	Shovel Headed Kill Machine	2005	D Standard	mute	1970-01-01
Ready To Go	Limp Bizkit			4:33	Ready To Go	2013	D Standard	mute	1970-01-01
Real Thing	Turnstile			1:59	Time & Space	2018	D Standard	mute	1970-01-01
Reality Dream	Riverside			6:15	Out of Myself	2004	D Standard	mute	1970-01-01
Reality Dream II	Riverside			4:45	Out of Myself	2004	D Standard	mute	1970-01-01
Reason To Believe	Sum 41			3:28	Screaming Bloody Murder	2011	D Standard	mute	1970-01-01
Reason to Believe	Strung Out			2:16	Twisted By Design	1998	D Standard	mute	1970-01-01
Rebel Monster	Volbeat			2:57	The Strength The Sound The Songs	2005	D Standard	mute	1970-01-01
Rebel Yell (Billy Idol Cover)	Children Of Bodom			4:14	Skeletons In The Closet	2009	D Standard	mute	1970-01-01
Rebirth Of Senses	Gorod			4:03	Process Of A New Decline	2009	D Standard	mute	1970-01-01
Reborn In Violence	Suicidal Angels			4:21	Dead Again	2010	D Standard	mute	1970-01-01
Reconquering the Throne	Kreator			4:16	Violent Revolution	2001	D Standard	mute	1970-01-01
Red Phoenix	Faceless Clown			5:07	No name	2015	D Standard	mute	1970-01-01
Red Streamer Battle	Yoshito Sekigawa, Shoh Murakami, Yoshiaki Kimura, Hiroki Morisihita, Fumihiro Isobe			2:50	Paper Mario: The Origami King Original Soundtrack	2020	D Standard	mute	1970-01-01
Redefine	Incubus			3:20	S.C.I.E.N.C.E.	1997	D Standard	mute	1970-01-01