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
Gokuraku Jodo	GARNiDELiA			3:45	Garnidelia Yakusoku -Promise Code-	2016	Drop D	mute	1970-01-01
Madoromi no Yakusoku	Satou Satomi & Kayano Ai			4:30	Madoromi no Yakusoku	2012	E Standard	mute	1970-01-01
Yakusoku	GARNiDELiA			4:23	Yakusoku - Promise code	2016	Eb Drop Db	mute	1970-01-01
Yakusoku	Roselia			5:09	Yakusoku	2020	Drop D	mute	1970-01-01