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
Roller Derby Queen	Jim Croce			3:30	Photographs and Memories	1975	E Standard	mute	1970-01-01
Roller Mobster	Carpenter Brut			3:34	Trilogy	2015	D Drop C	mute	1970-01-01
Rolling Balls	AFI			2:24	Very Proud of Ya	1996	E Standard	mute	1970-01-01
Romance About Tear	Epidemia			6:29	Elven Manuscript: Part 1	2004	Eb Standard	mute	1970-01-01
Romance Jeux Interdits (Forbidden Games)	Narciso Yepes			2:32	Guitara Española	1969	E Standard	mute	1970-01-01
Romance de Espana (Gasper Cefarin tab)	Antonio Rubira			3:21	Guitar Classic	1913	E Standard	mute	1970-01-01
Rome Wasn't Built In A Day	Morcheeba			3:34	Fragments of Freedom	2000	E Standard	mute	1970-01-01
Rooftops (A Liberation Broadcast)	Lostprophets			4:16	Liberation Transmission	2006	D Drop C	mute	1970-01-01
Room To Breathe	Blindspott			4:00	Blindspott	2002	Drop D	mute	1970-01-01
Room To Breathe	You Me At Six			4:02	Cavalier Youth	2014	E Standard	mute	1970-01-01
Root Beer Rag	Billy Joel			3:00	Streetlife Serenade	1974	E Standard	mute	1970-01-01
Roots Bloody Roots	Pabbarotti & Friends (JBO)			3:44	Happy Metal Thunder	1997	B Standard	mute	1970-01-01
Roots Bloody Roots	Sepultura			3:32	Roots	1996	Custom Tuning	mute	1970-01-01
Roots Bloody Roots (Drop D)	Pabbarotti & Friends (JBO)			3:44	Happy Metal Thunder	1997	Drop D	mute	1970-01-01
Roots Bloody Roots (Drop D)	Sepultura			3:33	Roots - Remastered	1996	Drop D	mute	1970-01-01