So, I just saw this channel yesterday, and even though they're parodies of tracks from these Baldi fan projects, I have to say, they sound pretty good, and I hope you'll do more.
In fact, I honestly thought the BFNS Ultimate tracks were legit variants of them at first before realizing they were parodies of them after listening to one and then reading the description, and it's interesting how you seamlessly incorporated parts of famous music like Sonic's Green Hill Zone, Never Gonna Give You Up (Rick Roll), and even the Flintstones intro song into these fake music rip parody tracks for example.
Maybe that means you could compose some background music for a non-Baldi story focused side video I have planned for my misc Johnster Space channel where I upload side content sometimes, though only if you want to, of course.
Anyways, seeing this channel gave me an idea for BFNS Ultimate. Maybe the parody versions of the BFNS Ultimate tracks could be included in Ultimate's planned Music Player room as well and listed as "Parody" variants of those OSTs (like the "12/28/25" Baldi's Song one), and it would be interesting if while you were listening to a soundtrack in the room, things appear in the room relating to the track (like Matt and floating Baldi Bucks appearing while listening to a Matt's Store OST) to make listening to it feel more alive and less static in a 3D space, and maybe there could be moving music notes on the walls in the room as well, kinda like how some of the 2.5D doors are planned to have animated textures on them, but for walls in certain rooms instead.