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
O Come, O Come, Emmanuel	August Burns Red			5:03	August Burns Red Presents: Sleddin' Hill	2012	D Drop C	mute	1970-01-01
Ocean of Apathy	August Burns Red			3:59	Constellations	2009	D Drop C	mute	1970-01-01
Oddloop	Frederic			4:18	Oddloop	2014	E Standard	mute	1970-01-01
Ode to the Sun	Dredg			4:12	Catch Without Arms	2005	Eb Drop Db	mute	1970-01-01
Of Blood and Salt	Gojira (feat. Devin Townsend & Fredrik Thordendal)			6:31	Of Blood and Salt	2011	D Standard	mute	1970-01-01
Of The Room	Dredg			3:44	El Cielo	2002	E Standard	mute	1970-01-01
Oh Holy Night	August Burns Red			4:32	August Burns Red Presents: Sleddin' Hill	2012	D Drop C	mute	1970-01-01
Oh! What A Girl! (Radio Edit)	Simply Red	Bass2		3:49	Stay	2007	Drop D	mute	1970-01-01
On Mercury	Red Hot Chili Peppers			3:28	By The Way	2002	E Standard	mute	1970-01-01
On My Throne	Bloodred Hourglass			3:48	Godsend	2019	D Drop C	mute	1970-01-01
One Way Traffic	Red Hot Chili Peppers			4:13	Unlimited Love	2022	E Standard	mute	1970-01-01
Only Wonder	Frederic			4:43	Only Wonder	2016	E Standard	mute	1970-01-01
Otherside	Red Hot Chili Peppers	Bass2		4:15	Californication	1999	E Standard	mute	1970-01-01
Out Of Range	Red Hot Chili Peppers			4:04	The Zephyr Song	2002	E Standard	mute	1970-01-01
P.S. Love The Black	Vendetta Red			5:29	Between The Never And Now	2003	E Standard	mute	1970-01-01