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
One Thing Leads to Another	The FIxx			3:22	Reach the Beach	1983	E Standard	mute	1970-01-01
One Thing Leads to Another	The Fixx			3:23	Reach the Beach	1983	E Standard	mute	1970-01-01
One Way or Another	Blondie			3:56	Parallel Lines	1978	Drop D	mute	1970-01-01
One World (Not Three)	The Police			4:49	Ghost In The Machine	1981	E Standard	mute	1970-01-01
Oni no Men	The GazettE			5:07	Akuyukai	2003	D Standard	mute	1970-01-01
Only God Knows Why	Kid Rock			5:30	Devil Without a Cause	1998	E Standard	mute	1970-01-01
Only Ones Who Know	Arctic Monkeys			3:13	Favourite Worst Nightmare	2007	E Standard	mute	1970-01-01
Only Tomorrow Knows	Dave Koz	Bass2		4:54	Saxophonic	2003	Eb Standard	mute	1970-01-01
Only a Northern Song	The Beatles			3:28	Yellow Submarine	1968	E Standard	mute	1970-01-01
Only the Lonely (Know the Way I Feel) (No Bass)	Roy Orbison			2:30	In Dreams: The Greatest Hits	1960	E Standard	mute	1970-01-01
Only the Lonely (Know the Way I Feel) (No Guitar)	Roy Orbison			2:30	In Dreams: The Greatest Hits	1960	E Standard	mute	1970-01-01
Open Your Eyes and Look North	Dance Gavin Dance			4:29	Downtown Battle Mountain	2007	Drop D	mute	1970-01-01
Operator (That's Not The Way It Feels)	Jim Croce			3:53	You Don't Mess Around With Jim	1972	E Standard	mute	1970-01-01
Opium For Nobody	Agatha Christie			3:59	Opium	1995	E Standard	mute	1970-01-01
Ora Pro Nobis Lucifer	Behemoth			5:38	The Satanist	2014	C# Standard	mute	1970-01-01