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
Oblivion Rockin' Night Style	ESTi			2:07	DJMAX PORTABLE Original Sound Tracks	2006	E Standard	mute	1970-01-01
Oh Boy!	Buddy Holly			2:18	From The Original Master Tapes	1957	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
Oi Kora!	Yasuhiro Misawa			2:16	Yuruyuri no Ongaku YURUYURI ORIGINAL SOUNDTRAC	2011	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 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
One Bad Man	Midnight Riders			3:04	Left 4 Dead 2 Original Soundtrack	2009	E Standard	mute	1970-01-01
One Last Time	Hamilton			5:01	Hamilton (Original Broadway Cast Recording)	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
Open Your Heart	Crush 40			5:15	Sonic Adventure: Original Soundtrack: 20th Anniversary Edition	2008	E Standard	mute	1970-01-01
Original Sin	Theatre of Hate			3:34	Original Sin 7" Single	1980	E Standard	mute	1970-01-01
Origins	Anup Sastry			2:41	Origins	2014	Custom Tuning	mute	1970-01-01
Origins	SAOR			6:49	Origins	2022	Drop D	mute	1970-01-01
Otherworld	Nobuo Uematsu			3:18	"Final Fantasy X" Original Soundtrack, Disk 1	2001	Eb Drop Db	mute	1970-01-01