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:2/2
K:D
['dD (3DDD ABAF', 'd2 fd fafd']  
X:1
L:1/8
M:2/2
K:D
 dD (3DDD ABAF | Dgfe dcBc | dD (3DDD ABAF | BEEF GABc | dD (3DDD ABAF | Dgfe dcBc | dBcA BGAF | 
 BEEF GABc || d2 fd fafd | Adfa gece | d2 fd fafd | BEEF GABc | d2 fd fafd | Adfa gece | 
 f2 ec dABG | FABc dcBc ||  