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
Underground	Men at Work			3:09	Business As Usual	1982	E Standard	mute	1970-01-01
Underground	Tom Waits			2:06	Swordfishtrombones	1983	E Standard	mute	1970-01-01
Underground Theme	Kenta Nagata, Shiho Fujii			2:20	New Super Mario Bros. Wii OST	2009	Drop D	mute	1970-01-01
Undergrowth	Caligula's Horse			2:42	Bloom	2015	E Standard	mute	1970-01-01
Underneath A Sullen Moon	Shadow Of Intent			4:47	Single	2018	Custom Tuning	mute	1970-01-01
Underneath A Sullen Moon (alt version)	Shadow Of Intent			4:42	Melancholy	2019	C Drop Ab	mute	1970-01-01
Underneath A Sullen Moon (tab version)	Shadow Of Intent			4:42	Melancholy	2019	C Drop Ab	mute	1970-01-01
Underneath It All	No Doubt			5:02	Rock Steady	2001	E Standard	mute	1970-01-01
Underneath The Bunker	R.E.M.			1:29	Lifes Rich Pagent	1986	E Standard	mute	1970-01-01
Underneath The Rotting Pizza	Nobuo Uematsu			1:57	Final Fantasy VII OST	1997	E Standard	mute	1970-01-01
Underneath The Sky	Oasis			3:24	The Masterplan	1998	E Standard	mute	1970-01-01
Underneath Your Clothes	Shakira			3:46	Laundry Service	2001	E Standard	mute	1970-01-01
Underneath Your Pillow	It Bites			5:28	Eat Me in St Louis	1989	D Standard	mute	1970-01-01
Underneath the Gun	Limp Bitzkit			5:50	Results May Vary	2003	Custom Tuning	mute	1970-01-01
Underneath the Radar	Underworld			6:00	Underneath the Radar	1988	E Standard	mute	1970-01-01