Theme: Tutti - Woodwinds - Brass - Strings - Percussion - Tutti

Variations: Flutes - Oboes - Clarinets - Bassoons
     Violins - Violas - Cellos - Basses, then Harp
     Horns - Trumpets - Trombones & Tuba, then Percussion

Fugue:

Violin harmonics and motivic foreshadowing are the transition to the next major section, a fugue.