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
['dgge dBGB', 'G2 AG (3FED AD FAcA BG G2', 'g2 bg']  
X:1
L:1/8
M:4/4
K:G
|: D2 | B2 BD cBcA | dgge dBGB | cBcd BGDB | BAAG AF F2 | GDBD GABc | dgge dBGB | dG (3Bcd edcF | 
 AGGF G2 :: AG | (3FED AD FAcA | BG G2 DGBg | ec c2 dB B2 | BAAG (3FED BA | DB B2 Dc c2 | 
 d>cd>e dBGB | dg (3Bcd edcF | AGGF G2 :: Bc | dggf g2 bg | g2 bg agfg | eaag a2 ag | 
 fed^c d2 d=c | (3Bcd BG (3ABc AF | GDBD GABc | dg (3Bcd edcF | AGGF G2 :|  