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
Oarai Joshi Gakuen Team Zenshin Shimasu!	Hamaguchi Shirou			1:43	GIRLS und PANZER ORIGINAL SOUNDTRACK	2012	E Standard	mute	1970-01-01
Oh What A Circus	David Essex			3:49	Evita Soundtrack	1978	E Standard	mute	1970-01-01
Ohayou Sayori!	Dan Salvato			2:47	Doki Doki Literature Club! (Original Soundtrack)	2017	E Standard	mute	1970-01-01
Okay, Everyone!	Dan Salvato			3:09	Doki Doki Literature Club! (Original Soundtrack)	2017	E Standard	mute	1970-01-01
Old Fat Spider	Maury Laws and Glenn Yarbrough			2:28	The Hobbit: The Complete Original Soundtrack	1977	E Standard	mute	1970-01-01
On Days Like This	Matt Monro			3:39	The Italian Job Soundtrack	1969	E Standard	mute	1970-01-01
On Her Majesty's Secret Service	John Barry			2:39	On Her Majesty's Secret Service (Original Motion Picture Soundtrack)	1969	E Standard	mute	1970-01-01
On The Dark Side	John Cafferty & The Beaver Brown Band			2:45	Eddie and the Cruisers Soundtrack	1983	E Standard	mute	1970-01-01
One Bad Man	Midnight Riders			3:04	Left 4 Dead 2 Original Soundtrack	2009	E Standard	mute	1970-01-01
One Punch Man - Sad Theme	Madhouse Inc.			2:15	One Punch Man Soundtrack	2015	E Standard	mute	1970-01-01
One Room Sugar Life	Akari Nanawo			1:34	Happy Sugar Life (Anime) Original Soundtrack	2018	Drop D	mute	1970-01-01
One Thing	Jeff Williams			3:51	RWBY Volume 6 Soundtrack	2019	Drop D	mute	1970-01-01
Open Your Heart	Crush 40			5:15	Sonic Adventure: Original Soundtrack: 20th Anniversary Edition	2008	E Standard	mute	1970-01-01
Opening Theme (Black Winter Night Sky)	Tekken 2			1:29	Tekken 2 Soundtrack	1995	Drop D	mute	1970-01-01
Opening: I Can't Turn You Loose	The Blues Brothers			1:56	The Blues Brothers Soundtrack	1980	E Standard	mute	1970-01-01