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
Rise of the Chaos Wizards	Gloryhammer			4:01	Space 1992: Rise of the Chaos Wizards	2015	D Standard	mute	1970-01-01
Rising Rainbow	Misokkasu			3:36	Shokugeki no Soma OP2 Single	2015	Drop D	mute	1970-01-01
Rock Lobster	The B-52's			6:53	The B-52's	1978	Custom Tuning	mute	1970-01-01
Rock Lobster	The B-52's			6:52	The B-52's	1979	Custom Tuning	mute	1970-01-01
Rock Lobster (No Bass)	The B-52's			5:01	The B-52's	1979	E Standard	mute	1970-01-01
Rocket Ride	Kiss			4:12	Alive II (disc 2)	1977	Eb Standard	mute	1970-01-01
Rockin' All The Way	AC/DC	Combo		3:27	Black Ice - 2008	2008	E Standard	mute	1970-01-01
Rockin' in the USA	Kiss			2:43	Alive II (disc 2)	1977	Eb Standard	mute	1970-01-01
Rolling in the Deep	Adele			4:01	21	2010	E Standard	mute	1970-01-01
Romantic Love	Masaya Matsura			3:37	PaRappa the Rapper 2	2001	E Standard	mute	1970-01-01
Romantic Love	Masaya Matsuura			3:37	PaRappa the Rapper 2 Original Soundtrack	2001	E Standard	mute	1970-01-01
Roshambo	The Network			2:51	Money Money 2020	2003	E Standard	mute	1970-01-01
Rough Diamonds (TV Size)	Screen Mode			1:31	Shokugeki no Soma Season 2 OP	2016	E Standard	mute	1970-01-01
Roxas	Yoko Shimomura			3:34	Kingdom Hearts 2 Original Soundtrack	2006	E Standard	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