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
Real Thing	Turnstile			1:59	Time & Space	2018	D Standard	mute	1970-01-01
Redneck Stomp	Obituary			3:34	Frozen In Time	2005	D Standard	mute	1970-01-01
Reformation	Amorphis			4:36	The Beginning of Times	2011	D Standard	mute	1970-01-01
Renaissance	Inventure			4:29	No Time to Waste	2020	Custom Tuning	mute	1970-01-01
Rich City Kids	Praying Mantis			3:49	Time Tells No Lies	1981	E Standard	mute	1970-01-01
Ride Into Obsession	Blind Guardian			4:50	At the Edge of Time	2010	D Standard	mute	1970-01-01
Ride The Rainbow	Axel Rudi Pell			4:56	Oceans Of Time	1998	Eb Standard	mute	1970-01-01
Ride on Time	Tatsuro Yamashita			4:38	Ride on Time	1982	E Standard	mute	1970-01-01
Rituals	Rolo Tomassi			3:24	Time Will Die and Love Will Bury It	2018	Drop D	mute	1970-01-01
Road Of No Release	Blind Guardian			6:30	At The Edge Of Time	2010	Eb 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
Rum	Alestorm			3:33	Back Through Time	2011	C Standard	mute	1970-01-01
Rumpelkombo	Alestorm			0:10	Back Through Time	2011	C Standard	mute	1970-01-01
Runnin' For Your Lovin'	The Brothers Johnson			5:14	Right On Time	1977	E Standard	mute	1970-01-01