This is a game-type chord sense training application for those who are learning about chords. For each question, a chord sound is played, and the user selects a chord name from the four options below that correspond to that chord. Currently, there are "Major Triad" and "Minor Triad," and 10 questions are randomly selected from 12 different chords. You can listen to the audio as many times as you want by pressing the repeat button.