ChordMaps2 is a music app for iPad which allows musicians, songwriters, music educators, and students to explore and improvise chord progressions, melody lines, and bass lines, in both major and minor keys, most of the time tapping with just one or two fingers. The most powerful feature of ChordMaps2 is that users can explore and play common chord progressions by touching chord locations on "musical maps." You can work with ChordMaps2 as a... Songwriter - to explore melody lines, bass lines, and chord progressions when you are away from your guitar or keyboard. Music Educator - to demonstrate principles of music theory, (including major and minor scales, diatonic and secondary chords, common chord progressions like IV-V-I, ii-V-I, I-vi-IV-V, I-V-vi-IV, etc.). You can also create spontaneous ear-training exercises, and explore melodic lines and chord progressions with students in an interactive environment. MIDI Musician - to tap out chord sequences, which are then played by one or more of the synth apps on your iPad, or you can send the MIDI information out through a MIDI interface to a computer running a digital audio workstation (DAW) like GarageBand or Logic Pro. How ChordMaps2 Works... ChordMaps2 is a MIDI controller. It works by being paired with a synthesizer app that generates sound. (Example synth apps include ThumbJam, SampleTank, bs-16i, iM1, and many more.) ChordMaps2 sends the MIDI signals: the synth app responds to the MIDI information and creates the audio signals. Video demonstrations of ChordMaps2 are found at the website. (Click the Developer Website link or visit Mugglinworks.com/ChordMaps2).