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
Rose Quartz	Toro Y Moi			4:17	Anything in Return	2013	E Standard	mute	1970-01-01
Rose Tint My World	The Rocky Horror Picture Show			8:20	The Rocky Horror Picture Show	1975	Drop D	mute	1970-01-01
Rouningyou no Yakata	Seikima-II			5:42	THE END OF THE CENTURY	1986	E Standard	mute	1970-01-01
Row of Crows	Chris Poland			3:32	Return to Metalopolis	1990	E Standard	mute	1970-01-01
Roxanne	George Michael			4:09	Songs From The Last Century	1999	E Standard	mute	1970-01-01
Rub Yer Daddy's Lucky Belly	Nine Pound Hammer			2:22	Kentucky Breakdown	2004	E Standard	mute	1970-01-01
Rumbling HWY... Mission Street	Sonic Adventure 2			2:48	Sonic Adventure 2	2001	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
Run Devil Run (SNSD Cover)	Andre & Fauzan			3:26	YouTube - BoyzGenerationJKT	2011	B Standard	mute	1970-01-01
Run Through the Speed Highway (Speed Highway 1)	Sonic Adventure			1:57	Sonic Adventure Soundtrack	1998	E Standard	mute	1970-01-01
Runaway	The Warning			4:01	XXI Century Blood	2017	Eb Standard	mute	1970-01-01
Runaways	All Time Low			3:37	Future Hearts	2015	E Standard	mute	1970-01-01
Russian Criminal Tattoo	Buerak			2:43	Prestupnost/Krestyanstvo	2014	E Standard	mute	1970-01-01
Russians	Sting	Bass2		3:57	Dream of the Blue Turtles	1985	Eb Standard	mute	1970-01-01
Russians	Sting			3:58	The Dream of the Blue Turtles	1985	E Standard	mute	1970-01-01