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
Possessed	Exorcist			2:49	Nightmare Theatre	1986	D Standard	mute	1970-01-01
Potato-Head In Wonderland	Utsu-P			3:54	Post-Traumatic Stress Disorder	2016	B Drop A	mute	1970-01-01
Power Player	Clutch			3:04	From Beale Street to Oblivion	2007	E Standard	mute	1970-01-01
Precious And Grace	ZZ Top			3:13	Tres Hombres - 1973	1973	E Standard	mute	1970-01-01
Promenade	Street Sweeper Social Club			2:33	Street Sweeper Social Club	2011	E Standard	mute	1970-01-01
Pussyfoot	SikTh			3:30	The Trees Are Dead & Dried Out Wait For Something Wild	2003	Eb Drop Db	mute	1970-01-01
Queen Of The Dead	Exorcist			3:26	Nightmare Theatre	1986	E Standard	mute	1970-01-01
Quit Playing Games (With My Heart)	Backstreet Boys			3:55	Backstreet Boys	1997	E Standard	mute	1970-01-01
R. U. Ready 2 Rock	Blue Öyster Cult			3:50	Spectres	1977	E Standard	mute	1970-01-01
RPG	SEKAI NO OWARI			4:55	Tree	2015	E Standard	mute	1970-01-01
Radio Death	Stigmata			5:01	Mainstream	2017	C# Drop B	mute	1970-01-01
Rain	Terence Trent D'Arby			2:59	Introducing the Hardline According to Terence Trent D'Arby	1987	E Standard	mute	1970-01-01
Raison d'être	Nightmare			3:52	Raison d'être	2007	Eb Standard	mute	1970-01-01
Rebel Monster	Volbeat			2:57	The Strength The Sound The Songs	2005	D Standard	mute	1970-01-01
Red Hill Mining Town	U2			4:53	The Joshua Tree	1987	E Standard	mute	1970-01-01