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:G
['(Bc) d2 (ed) dBGA BGEG D3 B', 'A2 (Bc)']  
X:1
L:1/8
M:4/4
K:G
 (Bc) | d2 (ed) dBGA | BGEG D3 B | c2 (cd) edcB | A2 A2 A2 (Bc) | d2 (ed) dBGA | BGEG D3 B | 
 BdBG EcAF | G2 G2 G2 |: (AB) | cBcd c2 (Bc) | dBBG A2 (Bc) | d2 BG (ed)cB | A2 A2 A2 (Bc) | 
 dBec dBGA | BGEG D2 (GA) | BdBG AcAF | G2 G2 G2 :|  