Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
Q:1/8=260
M:2/4
K:D
['Ad dd df fa', 'dA A2'  
X:1
L:1/8
Q:1/8=260
M:2/4
K:D
 Ad dd | df fa | gf ed | ce A2 | Ad dd | df fa | ge dc | d2 d2 :| dA A2 | Bd d2 | AF ED | CE E2 | 
 dA A2 | Bc de | fg ef | d2 d2 :|  