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
Happy New Nyaa	Itou Kanae, Iguchi Yuka, Taketatsu Ayana			4:02	Mayoi Neko Overrun! OP	2010	E Standard	mute	1970-01-01
Jajauma Way To Go	Taketatsu Ayana			4:31	K-ON! Character Image Song Series - Nakano Azusa	2009	E Standard	mute	1970-01-01
Joyful Todays	Taketatsu Ayana			3:09	K-ON!! Character Image Songs - Nakano Azusa	2010	E Standard	mute	1970-01-01
Over the Starlight	Taketatsu Ayana			4:11	K-ON!! Character Image Songs - Nakano Azusa	2010	E Standard	mute	1970-01-01
Watashi wa Watashi no Michi wo Iku	Taketatsu Ayana			3:20	K-ON! Character Image Song Series - Nakano Azusa	2009	E Standard	mute	1970-01-01