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
Reach Out	Red Hot Chili Peppers			4:14	Return of the Dream Canteen	2022	Drop D	mute	1970-01-01
Read My Mind	The Killers			4:10	Sam's Town	2006	E Standard	mute	1970-01-01
Read My Mind	The Killers			4:09	Sam's Town	2007	Eb Standard	mute	1970-01-01
Ready, Set, Go!	Tokio Hotel			3:40	Scream	2007	Eb Standard	mute	1970-01-01
Ready, Set, Go!	Tokio Hotel			3:39	Scream	2007	Eb Standard	mute	1970-01-01
Reality Bath	Lamb of God			4:37	Lamb of God	2020	Drop D	mute	1970-01-01
Reality Bath (Ajchili's Version)	Lamb of God			4:36	Lamb of God	2021	Drop D	mute	1970-01-01
Realization	Frankie and the Witch Fingers			4:42	ZAM	2019	E Standard	mute	1970-01-01
Reason To Believe	Sum 41			3:28	Screaming Bloody Murder	2011	D Standard	mute	1970-01-01
Rebel Army Theme (Final Fantasy 2)	Saitama Saisyu Heiki			3:30	MADE In Saitama	2002	Drop D	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
Red Blue Yellow Battle Music	Pokemon			4:12	GameBoy	1996	E Standard	mute	1970-01-01
Red Devil	Yngwie Malmsteen			4:09	Perpetual Flame	2008	Eb Standard	mute	1970-01-01
Red Light Indicates Doors Are Secured	Arctic Monkeys			2:26	Whatever People Say I Am, That's What I'm Not	2006	E Standard	mute	1970-01-01
Red Phoenix	Faceless Clown			5:07	No name	2015	D Standard	mute	1970-01-01