The present invention relates to a musical instrument for producing a harmonious scale of musical notes. The instrument includes nine separate sound actuators each of which is configured to cause the musical instrument to generate a different frequency selected from the group of frequencies comprising 174 Hz, 285 Hz, 396 Hz, 417 Hz, 528 Hz, 639 Hz, 741 Hz, 852 Hz and 963 Hz, the musical instrument being configured such that physically manipulating the sound actuators causes the musical instrument to generate the frequency corresponding to the sound actuator manipulated. The invention is also directed at a system for—writing music to be played with a musical instrument incorporating the harmonious scale of musical notes as described above. The notation system includes a staff of five parallel and horizontal lines separated by four spaces, the first line indicating a first note of 174 Hz, the space immediately above the first line indicating a second note of 285 Hz, the second line indicating a third note of 396 Hz, the space immediately above the second line indicating a fourth note of 417 Hz, the third line indicating a fifth note of 528 Hz, the space immediately above the third line indicating a sixth note of 639 Hz, the fourth line indicating a seventh note of 741 Hz, the space immediately above the fourth line indicating an eighth of 852 Hz and the fifth line, indicating a ninth note of 963 Hz.
