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:C
['(cBc).G (AGA).E FDGF (EC) C2 ceac BdgB', "G2 geca fdBg c'gec BdBG AcAF Gceg"]  
X:1
L:1/8
M:4/4
K:C
|: (cBc).G (AGA).E | FDGF (EC) C2 | ceac BdgB | Aag^f g2 G2 :: geca fdBg | c'gec BdBG | AcAF Gceg | 
 fdcB c2 c2 :|  