text: var five = require("../lib/johnny-five.js"),
    board = new five.Board();
  
  board.on("ready", function() {
    // Creates a piezo object and defines the pin to be used for the signal
    var piezo = new five.Piezo(3);
  
    // Injects the piezo into the repl
    board.repl.inject({
      piezo: piezo
    });
  
    // Plays a song
    piezo.play({
      // song is composed by an array of pairs of notes and beats
      // The first argument is the note (null means "no note")
      // The second argument is the length of time (beat) of the note (or non-note)
      song: [
        ["C4", 1 / 4],
        ["D4", 1 / 4],
        ["F4", 1 / 4],
        ["D4", 1 / 4],
        ["A4", 1 / 4],
        [null, 1 / 4],
        ["A4", 1],
        ["G4", 1],
        [null, 1 / 2],
        ["C4", 1 / 4],
        ["D4", 1 / 4],
        ["F4", 1 / 4],
        ["D4", 1 / 4],
        ["G4", 1 / 4],
        [null, 1 / 4],
        ["G4", 1],
        ["F4", 1],
        [null, 1 / 2]
      ],
      tempo: 100
    });
  
  });
  