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
Rediscovery (Segue)	Symphony X			1:29	V: The New Mythology Suite	2000	D Standard	mute	1970-01-01
Rhythm Of The Night	DeBarge			3:53	Rhythm Of The Night	1985	Drop D	mute	1970-01-01
Rhythm of the Rain	The Cascades			2:27	Rhythm of the Rain	1962	E Standard	mute	1970-01-01
Ringside	Tsunku			1:43	Rhythm Heaven Fever	2011	E Standard	mute	1970-01-01
Romanticide	Nightwish			5:05	Showtime, Storytime	2013	D Standard	mute	1970-01-01
Romanticide (Wacken Open Air 2013)	Nightwish			5:20	Showtime, Storytime	2013	D Standard	mute	1970-01-01
Rose Quartz	Toro Y Moi			4:17	Anything in Return	2013	E Standard	mute	1970-01-01
Rosie	John Mayer			4:07	The Search for Everything	2017	E Standard	mute	1970-01-01
Round Here	Counting Crows			5:38	August and Everything After	1993	E Standard	mute	1970-01-01
Russia Is Risen!	Kris Kelmi			6:29	Don't Regret about Anything	1994	E Standard	mute	1970-01-01
Ry Ry's Song	Glassjaw			3:36	Everything You Ever Wanted To Know About Silence	2009	Drop D	mute	1970-01-01
Rythm of the beast	Nicko McBrain (Feat.Dave Murray)			5:58	Rythm of the beast	1991	E Standard	mute	1970-01-01
Sanctuary	Ouroboros			4:34	Glorification of a Myth	2011	Eb Standard	mute	1970-01-01
Screaming	Loathe			5:59	I Let It In And It Took Everything	2020	Custom Tuning	mute	1970-01-01
Scythe of Hell	CROW'SCLAW			4:48	Scythe of Hell	2007	Eb Drop Db	mute	1970-01-01