RE ORBIT... TI ORBIT... LA ORBIT

The notes were set up on a numbered grid, 1 to 81. As we see all the notes fall on one side of a diagonal. Fives notes, Mi 42, Do# 51, La# 60, Sol# 68, Fa# 76, fall on the rim of a circle. La 64, Ti 56 and Re 49 could be radii of different circles.
Sol 36, Re# 45, and Do 54, Sol 72 and Fa 81 all fall in a vertical line.