Reunion is a piano solo composition composed in A key. It was inspired during the university graduation ceremony, which brings the idea that after being separated, we will be reunited again. The length of this music is around 4 minutes above. This composition didn’t have any particular part that needs to pay more attention, except high-speed arpeggios and high-speed scales that required some practices. Also, the melody formed by octaves needs to be brought out emotionally.