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
Real To Me	The Gentle Men			5:03	Real To Me	2020	C# Drop B	mute	1970-01-01
Reality Dream	Riverside			6:15	Out of Myself	2004	D Standard	mute	1970-01-01
Reality Dream II	Riverside			4:45	Out of Myself	2004	D Standard	mute	1970-01-01
Reality Dream III	Riverside			5:05	Second Life Syndrome	2005	Custom Tuning	mute	1970-01-01
Reality In Motion	Tame Impala			4:16	Currents	2015	E Standard	mute	1970-01-01
Realm Of Shades	Running Wild			4:32	Branded & Exiled	1985	E Standard	mute	1970-01-01
Realm of Rain	A Canorous Quintet			3:34	The Only Pure Hate	1998	C# Standard	mute	1970-01-01
Realm of the Senses	Marty Friedman			5:35	Scenes	1992	E Standard	mute	1970-01-01
ReaniManiac	Revocation			3:22	Existence Is Futile	2009	Eb Standard	mute	1970-01-01
Rearviewmirror	Pearl Jam			4:43	Vs.	1992	E Standard	mute	1970-01-01
Reassemble	A Day To Remember			4:00	Bad Vibrations	2016	Custom Tuning	mute	1970-01-01
Rebel Army Theme (Final Fantasy 2)	Saitama Saisyu Heiki			3:30	MADE In Saitama	2002	Drop D	mute	1970-01-01
Rebel Army Theme (PSP Version)	Nobuo Uematsu			2:32	Final Fantasy 2 PSP	2007	E Standard	mute	1970-01-01
Rebel Monster	Volbeat			2:57	The Strength The Sound The Songs	2005	D Standard	mute	1970-01-01
Rebellion (The Clans Are Marching)	Grave Digger			4:08	Tunes Of War	2006	E Standard	mute	1970-01-01