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
Rockin' in the USA	Kiss			2:43	Alive II (disc 2)	1977	Eb Standard	mute	1970-01-01
Roots of the Mountain	Enslaved			9:26	RIITIIR	2012	Eb Drop Db	mute	1970-01-01
Rose of the Devil's Garden	Tiger Army			4:04	III: Ghost Tigers Rise	2004	E Standard	mute	1970-01-01
Rufus's Welcoming Ceremony	Nobuo Uematsu			1:13	Final Fantasy VII	1997	E Standard	mute	1970-01-01
Rugan iz-za steny	Noize MC			3:47	Poslednii Albom	2010	E Standard	mute	1970-01-01
Running From Evil	DOOM II			3:50	DOOM II	1994	E Standard	mute	1970-01-01
Running From Evil	Robert Prince			3:57	DOOM II	1994	E Standard	mute	1970-01-01
Rusted From The Rain	Billy Talent			4:16	Billy Talent III	2009	Drop D	mute	1970-01-01
Ryu's Theme (CPS1)	Yoko Shimomura			0:52	Street Fighter II	1991	E Standard	mute	1970-01-01
SUMMER	Brockhampton			3:30	Saturation II	2017	E Standard	mute	1970-01-01
Saint Veronika	Billy Talent	Bass2 Combo Combo2		4:12	Billy Talent III	2009	Drop D	mute	1970-01-01
Samidare 20 Love (Studio Mix)	Houkago Tea Time			4:06	K-ON!! Houkago Tea Time II - CD1	2010	E Standard	mute	1970-01-01
Samishii Nettaigyo	Wink			4:27	Samishii Nettaigyo (single)	1989	D Standard	mute	1970-01-01
Save Us	Helloween			5:18	Keeper of the Seven Keys Part II	1988	E Standard	mute	1970-01-01
Savior Of Souls - Battle Theme	Naoshi Mizuta			4:46	Lightning Returns Final Fantasy XIII Soundtrack.	2013	E Standard	mute	1970-01-01