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
Happy Birthday (Backing Track)	Misc Traditional			0:35	Home	2019	E Standard	mute	1970-01-01
Happy Birthday (To Adam)	PlasticBag FaceMask			0:44	PBFM	2018	AEADG	mute	1970-01-01
Happy Birthday, Mr. Burns	The Ramones			0:46	Go Simpsonic	1993	E Standard	mute	1970-01-01
Happy Days	Pratt & McClain			2:39	Pratt & McClain feat. Happy Days	1976	E Standard	mute	1970-01-01
Happy Ending	The Strokes			2:59	Comedown Machine	2013	E Standard	mute	1970-01-01
Happy Guitar	The Spotnicks			2:10	Meet The Spotnicks	1964	E Standard	mute	1970-01-01
Happy Happy Party!	Poppin'Party			4:48	Kirakira datoka Yume datoka Sing Girls	2017	E Standard	mute	1970-01-01
Happy Maria!	Luck Ganriki			3:02	Dear Golden Witch -Umineko Sounds by Luck Ganriki- Umineko No Nakukoroni / Ogonmusou	2011	E Standard	mute	1970-01-01
Happy New Nyaa	Itou Kanae, Iguchi Yuka, Taketatsu Ayana			4:02	Mayoi Neko Overrun! OP	2010	E Standard	mute	1970-01-01
Happy Song	John Petrucci			6:06	Terminal Velocity	2020	E Standard	mute	1970-01-01
Happy Synthesizer	Pastel Palletes			4:05	BanG Dream! Girls Band Party! Cover Collection Vol.2	2019	Custom Tuning	mute	1970-01-01
Happy Talk	Captain Sensible			3:30	Women and Captains First	1982	Drop D	mute	1970-01-01
Happy Xmas (War is Over)	John Lennon			3:32	Happy Xmas (War Is Over)	1971	E Standard	mute	1970-01-01
Happy hour	Ligabue			4:12	Nome e cognome	2005	E Standard	mute	1970-01-01
Harbinger	Mick Gordon			7:16	Doom (Original Game Soundtrack)	2016	Drop D	mute	1970-01-01