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 fdedfd', 'd2 AG F2 FDEFED FGFEFAAB defdedfd gefdedBA']  
X:1
L:1/8
M:4/4
K:D
 A2 | d2 fdedfd | defd BAFA | BAGB AFDF | Eeedegfe | d2 fdedfd | defdBAFA | BAGBAFDF | Agfe d2 :: 
 AG | F2 FDEFED | FGFEFAAB | defdedfd | gefdedBA | FGFDEFED | FGFEFAAB | defdBAFA | agef d2 :|  