Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:4/4
K:D
['fd d2 BdAB defa bafa ge e2', 'ge e2 fedf'  
X:1
L:1/8
M:4/4
K:D
|: fd d2 BdAB | defa bafa | ge e2 fedf | eaaa abag | fd d2 BdAB | defa bafa | ge e2 fedf |1 
 edef de e2 :|2 edef defg || ad d2 adba- | adb a2 dfa | ge e2 fedf | eaaa afg^g | ad d2 adba- | 
 adb a2 dfa | ge e2 fedf | edce defg | ad d2 adba- | adb a2 dfa | ge e2 fedf | eaaa abag | 
 fd d2 BdAB | defa bafa | ge e2 fedf | edef d4 ||  