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
Rose Darling	Steely Dan			3:07	Katy Lied	1975	E Standard	mute	1970-01-01
Rotting	Green Day			2:53	Shenanigans	2002	E Standard	mute	1970-01-01
Rotting Away Is Better than Being G	Prostitute Disfigurement			2:57	Embalmed Madness	2001	D Standard	mute	1970-01-01
Rotting In Vain	Korn			3:36	Rotting in Vain - Single	2016	Custom Tuning	mute	1970-01-01
Rotting In Vain	Korn			3:32	The Serenity of Suffering	2016	Custom Tuning	mute	1970-01-01
Rough Landing, Holly,	Yellowcard			3:38	Lights and Sounds	2006	E Standard	mute	1970-01-01
Rouningyou no Yakata	Seikima-II			5:42	THE END OF THE CENTURY	1986	E Standard	mute	1970-01-01
Rubber Ring	The Smiths			3:51	Louder Than Bombs	1987	E Standard	mute	1970-01-01
Rufus's Welcoming Ceremony	Nobuo Uematsu			1:13	Final Fantasy VII	1997	E Standard	mute	1970-01-01
Rum Is For Drinking, Not For Burning	Senses Fail			2:46	Let It Enfold You	2004	Drop D	mute	1970-01-01
Rumbling HWY... Mission Street	Sonic Adventure 2			2:48	Sonic Adventure 2	2001	E Standard	mute	1970-01-01
Rumbling Hearts	DenKare			4:00	INSPIRANTE	2019	Custom Tuning	mute	1970-01-01
Run Like Hell / Waiting for the Worms	Pink Floyd			5:09	The Wall	1982	Drop D	mute	1970-01-01
Running	311			3:48	Transistor	1997	E Standard	mute	1970-01-01
Running	Jule Vera			3:12	Waiting On The Sun	2017	E Standard	mute	1970-01-01