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
Reach	Eyes Set To Kill			4:22	Reach	2008	Drop D	mute	1970-01-01
Reach Out To The Truth	Persona 4 Golden			2:50	Persona 4 Golden	2008	E Standard	mute	1970-01-01
Reach Out for the Light	Avantasia			6:35	The Metal Opera, Parts I & II	2008	Eb Standard	mute	1970-01-01
Ready For Salvation	Kalmah			4:30	For The Revolution	2008	C# Standard	mute	1970-01-01
Rebellion	Daisuke Ishiwatari			4:10	BlazBlue Original Soundtrack	2008	Eb Standard	mute	1970-01-01
Red Devil	Yngwie Malmsteen			4:09	Perpetual Flame	2008	Eb Standard	mute	1970-01-01
Red Socks Pugie	Foals			5:11	Antidotes	2008	E Standard	mute	1970-01-01
Red Soil	Dir En Grey			3:28	Uroboros	2008	Eb Drop Db	mute	1970-01-01
Reeses Pieces I don't Know Who John Cleese Is	I Set My Friends On Fire			6:26	You Can't Spell Slaughter Without Laughter	2008	D Drop C	mute	1970-01-01
Reflection	ONE OK ROCK			3:42	Kanjou Effect	2008	Drop D	mute	1970-01-01
Reflections Through Fire	Sylosis			4:33	Conclusion of an Age	2008	E Standard	mute	1970-01-01
Reino Olvidado	Rata Blanca			5:35	Reino Olvidado	2008	E Standard	mute	1970-01-01
Reisen Marugo Std	flapfrog			3:09	sasanqua e.p.	2008	E Standard	mute	1970-01-01
Remember Tomorrow	Metallica			5:49	Maiden Heaven	2008	Eb Standard	mute	1970-01-01
Remember When (Side B)	The Black Keys			2:14	Attack & Release	2008	E Standard	mute	1970-01-01