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
Underneath the Stars	The Defiants			5:15	The Defiants	2015	Eb Standard	mute	1970-01-01
Understand	Asian Kung-Fu Generation			3:48	Kimi Tsunagi Five M	2003	E Standard	mute	1970-01-01
Undivided	Asking Alexandria			3:35	The Black	2016	Custom Tuning	mute	1970-01-01
Undressed	Tiamat			7:11	Clouds	1992	D Standard	mute	1970-01-01
Une somme de détails	Mass Hysteria			3:01	Une somme de détails	2007	D Drop C	mute	1970-01-01
Unemployed in Summertime	Emiliana Torrini			3:51	Love in the Time of Science	1999	E Standard	mute	1970-01-01
Unfaithful	Rhianna			3:47	A Girl Like Me	2006	E Standard	mute	1970-01-01
Unfunky UFO	Parliament			4:28	Mothership Connection	1975	E Standard	mute	1970-01-01
Unheavenly Creatures	Coheed and Cambria			4:18	Vaxis - Act I: Unheavenly Creatures	2018	Drop D	mute	1970-01-01
Unicorn	Altaria			3:32	Invitation	2003	E Standard	mute	1970-01-01
Unidos por el Metal	Zenobia			4:42	Unidos por el Metal	2010	Eb Standard	mute	1970-01-01
United States of Whatever	Liam Lynch			2:10	Fake Songs	2003	E Standard	mute	1970-01-01
Unparalleled Insubordination	Vulvodynia			4:29	Psychosadictic Design	2016	AEADG	mute	1970-01-01
Unstoppable Momentum	Joe Satriani			5:18	Unstoppable Momentum	2013	Eb Standard	mute	1970-01-01
Until We Say Goodbye	Joe Satriani			4:34	Engines Of Creation	2000	E Standard	mute	1970-01-01