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
Road To Kingdom Come	Lindisfarne			4:15	Nicely Out Of Tune	1970	E Standard	mute	1970-01-01
Roadkill Morning	Children Of Bodom			3:39	Blooddrunk	2008	D Standard	mute	1970-01-01
Roam	The Story So Far			2:57	Under Soil And Dirt	2011	E Standard	mute	1970-01-01
Robot with Human Hair part II.V	Dance Gavin Dance			4:39	Downtown Battle Mountain II	2011	Drop D	mute	1970-01-01
Rock 'n' Roll is Where I Hide	Dave Graney and the Coral Snakes			5:53	The Soft 'N' Sexy Sound	1995	E Standard	mute	1970-01-01
Rock Club	Anamanaguchi			2:36	Scott Pilgrim vs. the World: The Game (Original Videogame Soundtrack)	2010	Eb Standard	mute	1970-01-01
Rock N Roll Sweetheart	The Creepshow			2:51	Run For Your Life	2008	E Standard	mute	1970-01-01
Rock On	311			3:33	Universal Pulse	2011	Custom Tuning	mute	1970-01-01
Rock Out, Roll On	Triumph			5:17	Thunder Seven	1984	E Standard	mute	1970-01-01
Rock and roll y fiebre	Pappo			3:57	Buscando un amor	2003	E Standard	mute	1970-01-01
Rock the Night	Europe			4:12	The Final Countdown	1988	E Standard	mute	1970-01-01
Rocky IV Training Montage	Vince Dicola			3:36	Rocky IV Soundtrack	1985	Drop D	mute	1970-01-01
Rocky Mountain High	John Denver			4:48	Rocky Mountain High	1972	Drop D	mute	1970-01-01
Roger Rabbit	Sleeping With Sirens			3:30	If You Were a Movie, This Would Be Your Soundtrack	2012	E Standard	mute	1970-01-01
Roll with the Changes	REO Speedwagon			5:39	You Can Tune a Piano, but You Can't Tuna Fish	1978	E Standard	mute	1970-01-01