Assemble a piece of music by merging the alphabetic representation of the predetermined musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:D
['AF F2 EFDB AFAB', 'efdB AFAB']  
X:1
L:1/8
M:4/4
K:D
 AF F2 EFDB | AFAB efdB | AF F2 EFDB | AFAB d3 B :| defd efdB | AFAB efdB | d2 fd efdB | AFAB d4 | 
 defd efdB | AFAB efdB | df f2 dfbf | afef d4 :|  