This app can be your teacher, your study partner, your skills practitioner, you metronome frantic speed exerciser. It will keep time and tuning, and throw all kinds of odd chord-progressions at you, so you better be ready, pay attention, and give it your best.

Learn and understand how to compose your own music, and expand you improvisation skills. Every musician will get new inspiration from this app, beginner or expert.

Music has the power to create strong sensations in the hearts and minds of the listeners, and I'm sure you have experienced this yourself. It seems like magic, and it is.

But there is also a kind of scientific side to it, that will only prevail to you, if you are a musician and are curios about understanding the essence of the musical mechanisms involved.

A simple melody can be transformed to a joyful, mellow, odd-sounding or even boring tune, depending on what chords the melody is accompanied with. Of course, rhythms, beat, instrument timbre and other characteristics of the tune also each plays their part. But in the center of it all, is the tunes polyphony, determined by the chord-progression driving the flow of the melody.

The Chord Exerciser App supports 25 different chord types, which means that for each step in your melody, you have 283 different options to choose from. Or to state it in another way; if the next step in your melody, as an example, has the melody note D - then there are 86 different chords to choose from, that has this D as part of the chord.