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
Romance in Durango	Bob Dylan			5:54	Desire	1976	E Standard	mute	1970-01-01
Romeo & Juliet	Dire Straits			6:03	Best Of Dire Straits & Mark Knopfler	1980	Opend G	mute	1970-01-01
Rotten To The Core	Overkill			5:03	Feel The Fire	1986	E Standard	mute	1970-01-01
Rouen	Arcane Roots			6:46	Left Fire	2011	E Standard	mute	1970-01-01
Routine	Silent Siren			4:06	Silent Siren	2015	E Standard	mute	1970-01-01
Rumors Of My Demise Have Been Greatly Exaggerated	Rise Against			4:17	Siren Song Of The Counter Culture	2004	Eb Standard	mute	1970-01-01
Rush Of Power	Iron Angel			3:26	Hellish Crossfire	1985	E Standard	mute	1970-01-01
Rusted Nail	In Flames			5:00	Sirens Charms	2014	Custom Tuning	mute	1970-01-01
Rx Coup	Sparta			3:18	Wiretap Scars	2002	Drop D	mute	1970-01-01
Sacrifice	Sacrifice			3:12	Torment In Fire	1985	E Standard	mute	1970-01-01
Safari Inn	Slash			3:29	World On Fire	2014	Eb Standard	mute	1970-01-01
Saint Anthony	Senses Fail			3:18	The Fire	2010	Drop D	mute	1970-01-01
Salamander	Ellegarden			3:39	Eleven Fire Crackers	2006	E Standard	mute	1970-01-01
Samba Pa Ti (Live)	Santana			6:45	Sacred Fire: Live in South America	1993	E Standard	mute	1970-01-01
Sara	Alph Lyla			2:05	Breath of Fire Original Soundtrack Special Box	2016	E Standard	mute	1970-01-01