“Vocal Trio,” which consists of three musical instruments, transforms the voice of a singer or a speaker received through a mike into a sound of each musical instrument while maintaining the same rhythm and musical scale. A pipe horn, which looks like a long trumpet or pipe, makes a deep and low-tone horn sound. A water bell, which looks like a water drop, makes a clear bell-sound, and a leaf flute, which looks like a leaf, makes a reed pipe sound. The spectator’s voice is transformed into the sound of a musical instrument by means of a microcontroller chip. The microcontroller chip of each musical instrument makes a sampling of his or her voice’s frequency. A sampling of the voice made through frequency data is sent to midi chips, which transform it into the sound of a particular musical instrument and the sound is released through the speakers.