圓週率之歌(嚴謹對應版)

Title: The Sound of Pi Solo acoustic piano, about five minutes, based on the digits of π: 3, 141592653589793238462643383279, Use a strict chromatic mapping throughout: 0=C, 1=C#, 2=D, 3=D#, 4=E, 5=F, 6=F#, 7=G, 8=G#, 9=A, Follow the digits of π in exact order as the main melodic line, Do not alter the number-to-note mapping, Moderate Andante, Begin with sparse single notes, clearly exposing the π sequence, Gradually add light broken chords, octave echoes, and restrained harmonic support without obscuring the numerical melody, Keep the texture transparent, reflective, and slightly mysterious, Balance mathematical order with the apparent unpredictability of the sequence, Avoid Romantic excess, heavy chords, or virtuoso display, Solo piano only, No vocals, strings, percussion, synthesizer, or other instruments, End softly without full resolution, as if π continues beyond the final note