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
Rub a Dub	311			2:46	Transistor Explicit	2001	E Standard	mute	1970-01-01
Rub out the Coffee Dot	OrangeCoffee			3:51	The Lounge Map 3 - evening caffelatte set	2013	E Standard	mute	1970-01-01
Rube Goldberg Variations	Thank You Scientist			8:56	Stranger Heads Prevail	2016	Custom Tuning	mute	1970-01-01
Rubi's Got A gun	Gypsy Pistoleros			3:42	Beautiful Disaster (The Complete 32 Track Ultimate Anthology Collection)	2011	E Standard	mute	1970-01-01
Ruby Dragon	One Morning Left			3:55	Hyperactive	2021	Custom Tuning	mute	1970-01-01
Ruby Pool	VOLA			4:12	Applause of a Distant Crowd	2018	E Standard	mute	1970-01-01
Rudolph The Red-Nosed Reindeer (Rock Version)	Anonymous (Johnny Marks)			1:34	A GP6/RSE Christmas Album	2018	E Standard	mute	1970-01-01
Rudolph the Red Nosed Reindeer	August Burns Red			2:07	August Burns Red Presents: Sleddin' Hill	2012	Drop D	mute	1970-01-01
Rudolph the Red-Nosed Reindeer	Goldfinger			1:34	The Goldfinger Christmas EP	2018	E Standard	mute	1970-01-01
Rudolph, The Red-Nosed Reindeer	Gene Autry and the Pinafores			3:07	Rudolph, The Red-Nosed Reindeer (Single)	1949	E Standard	mute	1970-01-01
Rugan iz-za steny	Noize MC			3:47	Poslednii Albom	2010	E Standard	mute	1970-01-01
Rugrats Theme	Mark Mothersbaugh			0:56	100 Kids Party	1996	E Standard	mute	1970-01-01
Ruin	Lamb Of God			3:57	As The Palaces Burn	2003	Drop D	mute	1970-01-01
Ruined Castle Corridor	Michiru Yamane			3:14	Castlevania Harmony of Despair OST	2010	Drop D	mute	1970-01-01
Ruiner	Nine Inch Nails			4:58	The Downward Spiral	1994	E Standard	mute	1970-01-01