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
Reaping Stone	Iced Earth			4:05	Something Wicked This Way Comes	1998	Eb Standard	mute	1970-01-01
Rebel Angel	The Dollyrots			2:43	Because I'm Awesome (Digital Edition Bonus Track)	2007	E Standard	mute	1970-01-01
Rebirthing	Skillet			4:00	Comatose	2006	Eb Drop Db	mute	1970-01-01
Reborn	Blinded Memory			3:31	From The Ashes	2013	Custom Tuning	mute	1970-01-01
Reborn	Leander Rising			5:48	Szividomar	2012	Custom Tuning	mute	1970-01-01
Reborn	Stone Sour			3:15	Come What(Ever) May	2006	Eb Drop Db	mute	1970-01-01
Reclaimed Earth	Andrew Hulshult			12:07	DOOM: Eternal - The Ancient Gods Part II (Original Game Soundtrack)	2021	Custom Tuning	mute	1970-01-01
Reconsider Baby	Eric Clapton			3:25	From the Cradle	1994	E Standard	mute	1970-01-01
Red Light In My Eyes (Part 1)	Children Of Bodom			4:33	Something Wild	1997	C# Standard	mute	1970-01-01
Red Light In My Eyes Part 2	Children Of Bodom			3:53	Something Wild	1997	C# Standard	mute	1970-01-01
Red Paper Lanterns	Maybeshewill			4:27	I Was Here For a Moment, Then I Was Gone	2011	Eb Standard	mute	1970-01-01
Red Skies	The Fixx			4:17	Shuttered Room	1982	E Standard	mute	1970-01-01
Red Wings Over Baron	Powerglove			7:50	Metal Kombat For The Mortal Man	2007	Custom Tuning	mute	1970-01-01
Redshift	Good Tiger			4:51	Raised in a Doomsday Cult	2020	Drop D	mute	1970-01-01
Reduced To The Failure Of Prayer	Skeletonwitch			2:55	Forever Abomination	2011	E Standard	mute	1970-01-01