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
['D GG/A/B/c/ dBG ccB c/d/ec dBd e/f/ge', 'G2 F/4D/4 DGG GDD GG/A/B/c/ dBG/F/ EAA']  
X:1
L:1/8
M:6/8
K:G
 D | GG/A/B/c/ dBG | ccB c/d/ec | dBd e/f/ge | f/g/af g2 d | gab abg | .fg/e dcB | cAd BGd | 
 eee f2 d/d/ | g>gg gBd | gfg afd | eee e/f/ge | dBG G2 || F/4D/4 | DGG GDD | GG/A/B/c/ dBG/F/ | 
 EAA AEE | AA/B/c/d/ ecA | .dc/d dec | B>BB BB>A | G>GG GAG | G/A/F/G/E/F/ D2 D | DEF GB,D | 
 (3G/4A/G/FG AFD | d2 c B/c/dG | F/G/AD G2 ||  