Compose a piece of music that combines the given melodic theme with the assigned alphabetical pattern.
X:1
L:1/8
Q:1/8=150
M:9/8
K:D
['B3 B2 B', 'afd def']  
X:1
L:1/8
Q:1/8=150
M:9/8
K:D
 B3 B2 B f2 A | B3 B2 B dBA | B3 B2 B f2 g | afd edB dBA :| afd def g2 e | afd def edB | 
 afd def g2 e | afd edB dBA :|  