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
River Runs Red	Life of Agony			1:58	River Runs Red	1993	D Standard	mute	1970-01-01
Road To Nowhere	Bullet For My Valentine			4:22	Scream Aim Fire	2008	D Standard	mute	1970-01-01
Roadkill Morning	Children Of Bodom			3:39	Blooddrunk	2008	D Standard	mute	1970-01-01
Robot Man	Scorpions			2:53	In Trance	1975	D Standard	mute	1970-01-01
Robototron	Evil Scarecrow			3:59	Crowcifiction	2006	D Standard	mute	1970-01-01
Rock of Cashel	Edguy			6:22	Monuments	2017	D Standard	mute	1970-01-01
Rock on the Radio	Firehouse			4:53	Firehouse	1991	D Standard	mute	1970-01-01
Rock'n'Roll Zhestok	Alisa			4:37	Excess	2016	D Standard	mute	1970-01-01
Rocket Dive	hide with Spread Beaver			3:48	Ja, Zoo	1998	D Standard	mute	1970-01-01
Romance With Rapist	The Hypnophonics			3:49	Wet	2009	D Standard	mute	1970-01-01
Romantic Rights	Death From Above 1979			3:18	You're A Woman, I'm A Machine	2004	D Standard	mute	1970-01-01
Romanticide	Nightwish			5:01	Once	2004	D Standard	mute	1970-01-01
Romanticide	Nightwish			5:05	Showtime, Storytime	2013	D Standard	mute	1970-01-01
Romanticide (Wacken Open Air 2013)	Nightwish			5:20	Showtime, Storytime	2013	D Standard	mute	1970-01-01
Room 24 (feat. King Diamond)	Volbeat			5:09	Outlaw Gentlemen & Shady Ladies (Deluxe Version)	2013	D Standard	mute	1970-01-01