All soundtracks from the Baldi's Basics Plus mod, Subterbaldi in BB+. Just like the Baldi's Basics Plus playlists I made, the Event Notification track is missing (and maybe another). If you somehow find the missing tracks please contact me. 

Subterbaldi in BB+ 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

subterbaldi

Subterfuge [ Garn47 ] |  Instrumental

Baldi's Basics Plus 0.7 camping minigame

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.

Subterbaldi in BB+ soundtracks

LAGZ Jackson