•Drones• The first part of the app allows you to play all chromatic notes in tunings from 432Hz to 444Hz in many different sounds. The notes sound continuously and it´s a perfect way to practice intervals, chords and scales. You also have the possibility to play the notes randomly in an adjustable period of time. The app supports quarter tones if you´ve chosen expert mode. Sounds: organ, piano, electric piano, strings, guitar, double bass, bassoon, clarinet, oboe, flute and sine •Chords• The