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.G. Loko	Of Mice & Men			3:21	The Flood	2011	D Drop C	mute	1970-01-01
OK, Time For Plan B	Enter Shikari			5:09	Take To The Skies	2007	Eb Drop Db	mute	1970-01-01
Oath Of Allegiance	Foreground Eclipse			4:02	Wishes Hidden In The Foreground Noises	2010	Drop D	mute	1970-01-01
Oath Sign	LiSA			4:11	Oath Sign (Anime Fate / Zero Opening Theme) - EP	2011	E Standard	mute	1970-01-01
Ob-La-Di, Ob-La-Da	The Beatles			3:11	The White Album	1968	E Standard	mute	1970-01-01
Ob-La-Di, Ob-La-Da Acoustic	The Beatles			2:23	The White Album	1968	E Standard	mute	1970-01-01
Obey The Moderator	Optimus Rhyme			3:01	School the Indie Rockers	2006	E Standard	mute	1970-01-01
Obfuscation	Between the Buried and Me			9:13	The Great Misdirect	2009	Custom Tuning	mute	1970-01-01
Objects In Mirror Are Closer Than They Appear	Jinjer			3:09	Inhale, Don't Breathe	2012	D Drop C	mute	1970-01-01
Oblivion	Michael Romeo			5:16	War of the Worlds, Pt. I	2018	D Standard	mute	1970-01-01
Obsolete Tears	Sacramentum			4:42	Far Away From The Sun	1996	E Standard	mute	1970-01-01
Obstacle 1	Interpol			4:14	Turn On the Bright Lights	2002	Drop D	mute	1970-01-01
Obstacle 2	Interpol			3:51	Turn On the Bright Lights	2002	Drop D	mute	1970-01-01
Ocarina Melody	Koji Kondo			1:47	The Legend of Zelda: Ocarina of Time OST	1998	E Standard	mute	1970-01-01
Ocarina of Time Title Theme	Koji Kondo			2:29	The Legend of Zelda: Ocarina of Time	1998	E Standard	mute	1970-01-01