Most chord ear training online consists of the following: 1) listen to a group of annoying tinny pitches (totally out of context), 2) click a multiple choice box, and 3) get a pop-up notification telling you 'yes' or 'no'. Not very satisfying. This app and its accompanying Ever-Evolving Guidebook are based upon a totally different premise - namely that the integration of tonal harmony can occur in a most pleasant way through Deep Listening, Guided Exploration, and the Resonant Human Voice.