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
Radiation Sickness	Nuclear Assault			2:52	Game Over	1986	E Standard	mute	1970-01-01
Radio Pirata - Backing Track	RPM			3:35	Revoluções Por Minuto	1985	E Standard	mute	1970-01-01
Radio Shack	Vulfpeck			3:23	Vulf Vault: Inside the Mind of Woody Goss	2019	E Standard	mute	1970-01-01
Rage of the Pentahook	Alestorm			3:11	No Grave but the Sea	2017	C Standard	mute	1970-01-01
Rage of the Pentahook for Dogs	Alestorm			3:11	No Grave but the Sea for Dogs	2017	C Standard	mute	1970-01-01
Ragnarok	Periphery			6:36	Periphery II	2012	Custom Tuning	mute	1970-01-01
Ragnarok	Periphery			4:30	Periphery II	2012	Custom Tuning	mute	1970-01-01
Ragnarök	Brymir			6:00	Breathe Fire to the Sun	2011	E Standard	mute	1970-01-01
Rainbow JakkaJan	Guilhox	Bass2		1:55	Memes	2010	E Standard	mute	1970-01-01
Raindrops Keep Fallin' on My Head	B. J. Thomas/Ana Carolina Giollo			1:42	Raindrops Keep Fallin' on My Head	2009	E Standard	mute	1970-01-01
Raindrops Keep Falling On My Head	B.J. Thomas			3:05	Raindrops Keep Falling On My Head	1969	E Standard	mute	1970-01-01
Rainmaker	Iron Maiden			3:51	Dance of Death	2003	Drop D	mute	1970-01-01
Rainmaker	Vanden Plas			6:40	The god thing	1997	Eb Standard	mute	1970-01-01
Raise this Barn Rock!	Claire Anne Carr			4:01	Sheer Pony Attack	2013	E Standard	mute	1970-01-01
Raised On Rock	Scorpions			4:01	Sting in the Tail	2010	E Standard	mute	1970-01-01