--cięcie--
play.addEventListener("click", () => {
  // Ukrycie przycisku
  play.style = "display: none";
  playing.style = "";

  Tone.start();

  let synth = new Tone.Synth({
    oscillator: { type: "sine" },
    envelope: { attack: 0, decay: 0, sustain: 1, release: 0 },
    volume: 6 
  }).toDestination();

  synth.triggerAttackRelease("A4", 2, 0);
});
