Fibonacci sequence (based on scale degrees - look at the numbers about 75% ish from the top of the stage - I chose not to use those under 10 because they're only 1 digit long). 9 parts: F: Piano in F, I: Trombone in G, B: Piano in B, O: Choir in C, N: Bassoon in D, A: Piano in A, C: Piano in C, C: Cello in C, I: Piano in G (each part is distinct by a red pointer in case one gets lost in the music).
Numbers from https://en.wikipedia.org/wiki/Fibonacci_number (CC BY-SA 3.0 AU), project inspired in the 1st place https://www.youtube.com/watch?v=IGJeGOw8TzQ
