The 5/4 meter is one of the things that attracted me to this song. The song first appears with the melody in the tuba. The piano plays a simple accompaniment during the chorus and a chromatic bass line is added during the verse. Measures 9-16 has the tuba playing the melody up an octave and the piano doing an arpeggiated accompaniment during the chorus and a similar accompaniment to measures 5-8 during the verse. The difference is the piano right hand being up an octave.
Measures 18-26 uses the motive from measure 3 of the chorus to build a development-like section that modulates frequently and uses chromaticism. This wild section tapers down in measure 26 and the verse returns in the piano at measure 27. A quiet statement of the chorus completes the movement.
Below is a video of the score that uses sampled sounds. Your comments are always appreciated.