Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:6/8
K:G
['D G2 A B2 c d2 g', 'edc B2']  
X:1
L:1/8
M:6/8
K:G
 D | G2 A B2 c | d2 g d2 c | BdG GFG | AcB A2 d | dcd efg | faf e2 g | fed Adc | d3 d2 :| f/g/ | 
 afd afd | c2 c Bcd | dgd dgd | c2 A Bcd | e2 f g2 f | edc B2 e | edc B2 A | GBG E2 D | G2 G GBd | 
 e3 g3 | dBG A2 B | E2 F G2 A | B2 g BcA G3 G2 ||  