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
Rattle That Lock	David Gilmour			4:41	Rattle That Lock	2015	E Standard	mute	1970-01-01
Ravenhead	Orden Ogan			6:09	Ravenhead	2015	D Drop C	mute	1970-01-01
Rawhide	Ensiferum			2:39	One Man Army	2015	D Standard	mute	1970-01-01
Ray of Light	ZHIEND			4:15	ECHO	2015	E Standard	mute	1970-01-01
Ray of Light (Japanese Ver.)	ZHIEND			4:15	ECHO	2015	E Standard	mute	1970-01-01
Ready to Go	Mary's Blood			4:32	Bloody Palace	2015	E Standard	mute	1970-01-01
Real	How-Low-Hello			4:25	Smells Like Tea,Espresso	2015	E Standard	mute	1970-01-01
Reality In Motion	Tame Impala			4:16	Currents	2015	E Standard	mute	1970-01-01
Reapers	Muse			6:04	Drones	2015	Drop D	mute	1970-01-01
Reapers (Live at Belfast)	Muse			6:05	Drones	2015	Drop D	mute	1970-01-01
Rebellion of the Snakes	Strung Out			3:42	Transmission.Alpha.Delta	2015	Eb Standard	mute	1970-01-01
Rebirth	The Dear Hunter			2:52	Act Iv: Rebirth in Reprise	2015	E Standard	mute	1970-01-01
Reborn	One More Page			3:59	Poetic Insanity	2015	Eb Standard	mute	1970-01-01
Rebuild, Recreate	Dream State			5:03	Consequences	2015	Eb Drop Db	mute	1970-01-01
Receipt	The Black Dahlia Murder			4:05	Abysmal	2015	C Standard	mute	1970-01-01