Hello
@blaggins,
Modes of limited transposition have intervals structure that repeat after a certain number of semitones.
For instance, the 2nd mode of Messiaen, described by the sequence 1 2 1 2 1 2 1 2, as a period of 3 semitones (or a minor third), after which all existing harmonies return to being identical.
To explore the range of potential chords within this mode, let's consider its initial transposition: C Db Eb E F# G A Bb. By examining chords that use C as their root note, we find several basic and well-known chords: C Major, C Minor, C Dominant Seventh, and C Minor Seventh. This mode also offers access to a variety of more intricate chords.
The repetition of available chords every 3 semitones means these same chords reappear with the roots in C, Eb, F# and A.
To complement the comedic aspect of the cartoon, the soundtrack primarily utilizes major chords as the foundation of the harmony. Specifically, there is a continuous oscillation between two major chords whose root notes are 6 semitones apart. The root note of the starting chord may vary within the mode at the beginning of each measure, depending on the scene's dynamics.
Considering the trumpet's playability, I've seen performers manage at this rate of note flow, but I think the challenge lies in adjusting lip and mouth positioning to accomodate the significant interval jumps, especially in the higher registers.