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
Pre-Game	Municipal Waste			0:42	The Art Of Partying	2007	E Standard	mute	1970-01-01
Pre-Parade	Rie Kugimiya			3:25	"Toradora! (TV Anime)" Best Album "Root Happyend"	2009	E Standard	mute	1970-01-01
Pre-Parade (Tv Size)	Amanda Lee			1:32	Unity	2020	E Standard	mute	1970-01-01
Princess Party -Seishun Kinshirei-	DenKare			3:49	Inspirante	2019	Custom Tuning	mute	1970-01-01
Pro-Zombie	Die Ärzte			2:11	Geräusch	2003	Eb Standard	mute	1970-01-01
Prologue-Theme-(midi)	Nobuo Uematsu			1:56	Final Fantasy IV	1988	E Standard	mute	1970-01-01
Proponent for Sentience I - The Conception	Allegaeon			6:19	Proponent for Sentience	2016	E Standard	mute	1970-01-01
Proponent for Sentience II - The Algorithm	Allegaeon			8:19	Proponent for Sentience	2016	E Standard	mute	1970-01-01
Proponent for Sentience III - The Extermination	Allegaeon			7:03	Proponent for Sentience	2016	E Standard	mute	1970-01-01
Pussy Willow - 2005 Remaster	Jethro Tull			3:56	Broadsword and the Beast	2005	E Standard	mute	1970-01-01
Puzzle -extra hot mix-	Round Table ft. Nino			4:08	NHK Ni Youkuso	2006	E Standard	mute	1970-01-01
Pyro-compulsive	World Under Blood			4:46	Tactical	2011	D Standard	mute	1970-01-01
Quote-Unquote	Mr Bungle			6:56	Mr Bungle	1991	Drop D	mute	1970-01-01
R-Evolve	30 Seconds To Mars			4:01	A Beautiful Lie	2005	D Standard	mute	1970-01-01
ROCK-mode'18	LiSA			5:32	LiSA BEST -Way-	2018	Eb Standard	mute	1970-01-01