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
Unicorn Theme	Tangerine Dream			1:49	Legend OST	1985	E Standard	mute	1970-01-01
Unicorn Wizard	Ninja Sex Party			3:06	Strawberries and Cream	2013	E Standard	mute	1970-01-01
Unidos Por El Rock	Angeles Del Infierno			3:51	Pacto Con El Diablo	1984	E Standard	mute	1970-01-01
Union (Slopes of St. Benedict)	Sabaton			4:08	The Art of War	2008	E Standard	mute	1970-01-01
Union City Blue	Blondie			3:24	Eat To The Beat	1979	E Standard	mute	1970-01-01
Unisonic	Unisonic			3:30	Unisonic	2012	E Standard	mute	1970-01-01
United Cigar	Good Riddance			2:48	For God and Country	1995	E Standard	mute	1970-01-01
United Forces	Stormtroopers Of Death			1:54	Speak English Or Die	1985	E Standard	mute	1970-01-01
Unknown Caller (Live)	U2			5:53	U2360 at the Rose Bowl	2010	E Standard	mute	1970-01-01
Unknown Civilization	Laur			4:12	The Angel's Message	2018	Drop D	mute	1970-01-01
Unlucky 13	DevilDriver			4:10	The Fury Of Our Maker's Hand	2005	Custom Tuning	mute	1970-01-01
Unnatural Selection	Havok			4:17	Unnatural Selection	2013	Eb Standard	mute	1970-01-01
Uno (Acoustic)	Marlene Kuntz			4:37	Uno	2007	E Standard	mute	1970-01-01
Unquestionable Presence	Atheist			4:10	Unquestionable Presence	1991	E Standard	mute	1970-01-01
Unreleased Track	Yasushi Ishii/Solice			1:49	Hellsing OST	2013	E Standard	mute	1970-01-01