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:6/8
K:G
['gfg d2 c BcA', 'd3 dcd D2 d cBc D3 cBA', 'cB/A/ G/A/B/c/ AG/F/ B/d/G A/c/F E/G/B/A/ AG', 'G/A/B/c/ F/G/A/B/ c/d/e/f/ d/f/B c/f/A B/d/c/E/']  
X:1
L:1/8
M:6/8
K:G
|: gfg d2 c | BcA G3 | G2 D B2 G | dcB A3 | gfg d2 c | BcA G2 d | g2 e f2 d | Ad^c d3 :: dcd D2 d | 
 cBc D3 | cBA BAG | F2 G AFD | gfg d2 c | BcA G3 | DcB AGF | GDB, G,3 ::[M:2/4][K:F] fc cB/A/ | 
 G/A/B/c/ AG/F/ | B/d/G A/c/F | E/G/B/A/ AG :: C/D/E/F/ G/A/B/c/ | F/G/A/B/ c/d/e/f/ | 
 d/f/B c/f/A | B/d/c/E/ F2 :|  