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
Rawhide	The Meteors			2:28	The Mutant Monkey and the Surfers From Zorch	1988	E Standard	mute	1970-01-01
Realidade Urbana	Project46			3:47	Tr3s	2017	B Drop A	mute	1970-01-01
Rebel Inside	HammerFall			5:37	Threshold	2006	Eb 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
Rebel Yell (Billy Idol Cover)	Dope			4:08	No Regrets	2009	Eb Drop Db	mute	1970-01-01
Recharging the Void (E Tuning)	Vektor			13:40	Terminal Redux	2016	E Standard	mute	1970-01-01
Recharging the Void (F Tuning)	Vektor			13:40	Terminal Redux	2016	F Standard	mute	1970-01-01
Recollections (Feat. Chris Vogagis of Wide Eyes)	A Sense of Purpose			5:01	Zoetic	2016	Custom Tuning	mute	1970-01-01
Reconsider Baby	Eric Clapton			3:25	From the Cradle	1994	E Standard	mute	1970-01-01
Red Tide	Rush			4:42	Presto	1989	E Standard	mute	1970-01-01
Redshift Riders	Joe Satriani			4:53	Super Colossal	2006	E Standard	mute	1970-01-01
Reino Olvidado	Rata Blanca			5:35	Reino Olvidado	2008	E Standard	mute	1970-01-01
Rell, The Iron Maiden	League of Legends & Ecca Vandal			4:55	Rell, The Iron Maiden	2020	C# Drop B	mute	1970-01-01
Remember When (Side B)	The Black Keys			2:14	Attack & Release	2008	E Standard	mute	1970-01-01
Render The Void	Erra			5:52	Impulse	2011	C Drop Ab	mute	1970-01-01