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
Marbled Regression	Thirty Nights of Violence			3:53	You'll See Me Up There	2020	Custom Tuning	mute	1970-01-01
Regress	Polaris			3:29	The Guilt & The Grief	2016	Custom Tuning	mute	1970-01-01
Regression/Overture 1928	Dream Theater			5:43	Metropolis Pt.2: Scenes From A Memory	1999	Custom Tuning	mute	1970-01-01
The Progression Of Regression	Chunk! No, Captain Chunk!			3:47	Pardon My French	2013	Drop D	mute	1970-01-01