Almost all soundtracks from Baldi's Basics Plus. The only soundtrack I couldn't find was Event Notification (and I think the audio from the NINENINE Secret), so for now, I'll put Win in its place until I can find the track. If you manage to find the missing tracks please contact me. 

Baldi's Basics Plus soundtracks

Baldi's Basics Classic Remastered Original Soundtrack

That's Me!

A-Tisket, A-Tasket

Dancin' Time

BAD SUM

Baldi's Basics Kickstarter Madness

Creepy Old Computer

Hayride Too I Don't Even Care

it's extended version of baldis basics critical error song (NOT MINE) 

Error screen - Baldis Basics Classic Remastered

Baldi's Basics Plus 0.7 camping minigame

Lights Out Escape soundtrack from Baldi's Basics Plus.

Composed by Micah McGonigal (mystman12).

Baldi's Basics Plus - Lights Out Escape

Tutorial theme from Baldi's Basics Plus.

Composed by Micah McGonigal (mystman12).

Baldi's Basics Plus - Tutorial

Some nostalgia-themed accordion/harmonica-like music jingle that plays when time runs out in the field trip quest. It does not loop after it ends.

A 1990's-styled nostalgia music plays at the start during the game (also for Baldi's Basics Classic, Baldi's Basics Birthday Bash, and the public demo). The track later loops, but will stop playing when the Player gets the answer wrong on either one of two beginning notebooks in the classic edition, and when Baldi starts his chase in the public demo.

School

The soundtrack for the music used while your in the elevator, which was added in the V0.2 update of Baldi's Basics Plus. Credit to Basically Games for creating the soundtrack.

Baldi's Basics Plus V0.2 Elevator Soundtrack

Exactly.

If you find a soundtrack I haven't added to one of my playlists or have a suggestion for a playlist, please let me know by going to the link "Contact/main".

Make sure to head to "Official Website" for all my important links, contact/updates link, Terms & Conditions, and pretty much everything else.

Baldi's Basics Plus soundtracks

LAGZ Jackson