Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/8
M:9/8
K:Bmin
['B2 A', 'afb afe']  
X:1
L:1/8
M:9/8
K:Bmin
 B3 BAB def | B2 A AGE EFA | cdB BAc dcA |1 def afe dBA :|2 def afb afe |: dBA B2 A def | 
 gee fdd Bdd | ged B2 A def |1 afb afe edB :|2 afb afe dBA ||  