-kbx128- march 1993
music for a crap amos
game written by my
brother.(only joking)
It appears from this that "kbx128" is the author of the music. The music created by Matt Thomas (the other TuxKart music) contains different descriptions, all of which are very similar:
TuxKart Track 7
composed by:
Matt Thomas (2000)
Track Select Menu
background music
TuxKart: Track2
In-game racing music
composed by:
Matt Thomas 2000
I am fairly confident from this that kbx128 and Matt Thomas are not the same person. Boom Boom Boom sounds nothing like Matt's TuxKart music; the style in which his music is written and programmed is completely different.
I did a search for "kbx128" and found a page about them on this Demoscene database, however here they are listed as "vim!". It does state that they were known as kbx128 from 1993-1995, the same year that Boom Boom Boom was composed according to its description. It does not list their real name.
I also found a page about them on the Mod Archive. Tons of their music can be found here, including Boom Boom Boom on the very last page of the modules section (listed as "boomboom.mod").