
Bagpipe
Keys 1-8 play the base octave; hold Shift for the same eight notes one octave higher, for sixteen notes in total.
Updated
Try it
Click a key to preview its sound: off-hand keys 1-8, and Shift+1-8 for the octave above.

Keys 1-8 play the base octave; hold Shift for the same eight notes one octave higher, for sixteen notes in total.
Updated
Click a key to preview its sound: off-hand keys 1-8, and Shift+1-8 for the octave above.