The work “Oboe Sings a Song of π in C Major” has been slightly revised by me.
A one to one correspondence between musical scales: c2,d2,e2,f2,g2,a2,b2,c3,d3,e3 and digits:1,2,3,4,5,6,7,8,9,0 is established.
Then the series of local maxima in the line of melody suggests the first 100 decimal digits of π. The work belongs to mathematical music.