These stage settings use hex tones to group the various size orchestral string instruments onto a single key. The left zone will be set as a major chord and the right zone a minor chord. The major chord hex tone files are included for use in other stage settings only. They are not needed for these stage settings. Sound demo....https://soundcloud.com/bradmz/1-key-strings-and-pizzicato-demo-casio-px-5s