Compose a piece of music following the specified structure and theme.
X:1
L:1/8
M:2/2
K:D
['D2 FD (A,D)FD G>BAF', 'Bdeg fdec d/d/d'  
X:1
L:1/8
M:2/2
K:D
 A, | D2 FD (A,D)FD | G>BAF E/E/E E2 | D2 FD (A,D)FD | G>BAF D/D/D D :| E | Ddcd BcdB | ABAF EFGE | 
 Ddcd Bdeg | fdec d/d/d de | fedc BcdB | edcB ABcA | dcdA Bdeg | fdec d/d/d d ||  