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
Polly (Unplugged)	Nirvana			3:12	Unplugged In New York	1993	Eb Standard	mute	1970-01-01
Priestess	Periphery			5:07	Juggernaut: Omega	2015	Eb Standard	mute	1970-01-01
Queen of Rose	Daisuke Ishiwatari			3:49	Blazblue Calamity Trigger	2008	Drop D	mute	1970-01-01
Radio	The Corrs			4:51	Unplugged	1999	E Standard	mute	1970-01-01
Red Berry Joy Town	The Wonder Stuff			2:55	Eight Legged Groove Machine	1988	E Standard	mute	1970-01-01
Reggae Rock	Jackie Mittoo			2:00	Reggae Magic!	1972	E Standard	mute	1970-01-01
Reggatta de Blanc	The Police			3:06	Reggatta de Blanc	1979	E Standard	mute	1970-01-01
Relentless	Lionheart			1:55	Built On Struggle	2011	D Drop C	mute	1970-01-01
Reprise	Periphery			1:35	Juggernaut: Omega	2015	D Drop C	mute	1970-01-01
Rock Is Dead	Beartooth			3:47	Aggressive	2016	D Drop C	mute	1970-01-01
Rock'n'Roll suicide	David Bowie			3:05	The rise & fall of Ziggy Stardust & the Spiders from Mars	1972	E Standard	mute	1970-01-01
Runaway	Los Pericos			3:12	Pampas Reggae	1994	E Standard	mute	1970-01-01
Running On Faith	Eric Clapton			6:30	Unplugged	1994	Opend G	mute	1970-01-01
San Francisco Bay Blues (Unplugged)	Eric Clapton			3:10	Unplugged	1992	E Standard	mute	1970-01-01
Sandpit Turtle	Bring Me The Horizon (ft. Joe Bad)			4:06	iYoungGun Community	2013	Custom Tuning	mute	1970-01-01