Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/16
M:2/4
K:D
['d2f2 egec', 'fafd fafd']  
X:1
L:1/16
M:2/4
K:D
 f2 | egfc d2f2 | egec d2A2 | B2A2 B2c2 | dcde d2f2 | egec d2f2 | egec d2A2 | B2A2 B2c2 | d6 :| 
 g2 | fafd fafd | gbge gbge | fafd fafd | cece A2f2 | fafd fafd | gbge gbge | fafd efec | d6 :|  