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
No Buts!	Kawada Mami			3:42	To Aru Majutsu no Index II OP	2010	Drop D	mute	1970-01-01
PSI-missing	Kawada Mami			4:28	To Aru Majutsu no Index OP	2008	E Standard	mute	1970-01-01