Compose a piece of music that combines the given melodic theme with the assigned alphabetical pattern.
X:1
L:1/8
M:4/4
K:D
['A3 B', 'A3 g fdec']  
X:1
L:1/8
M:4/4
K:D
 A3 B AGFA | D=ccB c2 Bc | A3 B AGFE | DGGF G2 FG | ADBD AGFE | Ddde f3 g | afge fded | 
 dcAF G2 FG :: A3 g fdec | Ad d2 Ad d2 | A3 g fdec | dcAF G2 FG | A3 g fdec | Addc defg | 
 afge fded | dcAF G2 FG :|  