The first score shows the notes in standard notation with the button numbers above. Pay careful attention to the phrases where you are crossing rows whist keeping the bellows direction constant. There are no mid-bar bellows direction changes which means it is possible to keep the tune sounding very smooth.
The chords for the tune are shown here, above the stave. Notice that it requires both an Am and Bm chord. These are not available from the 'normal' button combinations and must be formed by playing 'cross chords'
Am is formed from playing the A pull bass note and the C pull chord simultaneously.
Bm is formed from playing the B push bass note and the D push chord simultaneously.
These are both indicated in the video below.