class Guitar {
  constructor (color, name, wood) {
    this.color = color;
    this.name = name;
    this.wood = wood;
  }

  play(note) {
    console.log(`${this.name}:${this.color}:${this.wood} plays ${note}`);
  }
}

class Jazzmaster extends Guitar {
  constructor (color, name, wood) {
    super(color, name, wood);
    this.volume = 0;
    this.tone = 0;
  }

  volume(level) {
    this.volume = level;
  }

  tone(level) {
    this.tone = level;
  }
}

class BassVI extends Jazzmaster {
  play(note) {
    console.log(`${note}`);
  }
}

class Person {
  constructor (name, age, eyes) {
    this.name = name;
    this.age = age;
  }

  talk(words) {
    console.log(`I am ${this.name} and ${words}.`);
  }
}

class Musician extends Person {
  play(instrument, sheet_music) {
    for(let note of sheet_music) {
      instrument.play(note);
    }
  }
}

let babbington = new Musician("Roy Babbington", 78);
let harris = new Musician("Jet Harris", 71);
let taliesin = new BassVI("red", "Taliesin");
let golden = new BassVI("gold", "Golden Arm");

babbington.play(taliesin, ['a','b','c','d']);
harris.play(golden, ['a','b','c','d']);