Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:2/4
K:D
['ae/g/ fd', 'DA/A/ Fd/d/ Af/f/ db/b/ ag ec', 'ec/B/ AB cd'  
X:1
L:1/8
M:2/4
K:D
|: e | ae/g/ fd | ae/g/ fd | eA ce | de fg | ae/g/ fd | ae/g/ fd | eA ce | df d :: z | 
 DA/A/ Fd/d/ | Af/f/ db/b/ | ag ec | de fd | DA/A/ Fd/d/ | Af/f/ db/b/ | ag ec | df d :: z | 
 ec/B/ AB | cd ef | gf/e/ dD | FA df | ec/B/ AB | cd ef/g/ | aa/A/ B/B/c | df d :|  