Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:4/4
K:D
['D2 FA DAFA dfed cABc d2 cA', 'a2 fa dafa']  
X:1
L:1/8
M:4/4
K:D
|: D2 FA DAFA | dfed cABc | d2 cA (3Bcd AF | GBAF GFEF | D2 FA DAFA | dfed cABc | d2 cA (3Bcd AF |1 
 GBAG FDDE :|2 GBAG FDDf |: a2 fa dafa | gfed BdAf | a2 fa dafa | bgeg fddf | a2 fa dafa | 
 gfed BdAf | afec dBAF |1 GBAG FDDf :|2 GBAF GFEF ||  