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
Under the Red Cloud	Amorphis			5:33	Under the Red Cloud	2015	D Drop C	mute	1970-01-01
Undergrowth	Caligula's Horse			2:42	Bloom	2015	E Standard	mute	1970-01-01
Underneath the Stars	The Defiants			5:15	The Defiants	2015	Eb Standard	mute	1970-01-01
Understanding Silence	Good Tiger			3:36	A Head Full of Moonlight	2015	E Standard	mute	1970-01-01
Undertale	Toby Fox			6:24	Undertale OST	2015	E Standard	mute	1970-01-01
Undertale Medley	Toby Fox			28:42	Undertale Medley	2015	E Standard	mute	1970-01-01
Underworld	Symphony X			5:51	Underworld	2015	D Standard	mute	1970-01-01
Unendlich	Der Weg einer Freiheit			5:12	Stellar	2015	Eb Standard	mute	1970-01-01
Unessakavelija	Malady			7:27	Malady	2015	E Standard	mute	1970-01-01
Unexpected (ft. Sam Arrag)	Change Of Loyalty			4:27	Breathtaker	2015	Bb Drop Ab	mute	1970-01-01
Unforgettable Greenery of Connection	ZUN			3:38	Touhou 15: Legacy of Lunatic Kingdom OST	2015	E Standard	mute	1970-01-01
Universe on Fire	Gloryhammer			4:06	Space 1992: Rise of the Chaos Wizards	2015	D Standard	mute	1970-01-01
Unknown To The I	Drab Majesty			4:11	Careless	2015	Custom Tuning	mute	1970-01-01
Unravel (Tokyo Ghoul)	Tam Lu Music			4:17	Tokyo Ghoul	2015	Custom Tuning	mute	1970-01-01
Unseen	The Afterimage			4:57	Lumiere	2015	AEADG	mute	1970-01-01