Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:3/4
K:G
['G2 B2 d2 gb af g2 ed', 'Bd dd e/d/c/B/ cc d/c/B/A/ GB BB']  
X:1
L:1/8
M:3/4
K:G
 G2 B2 d2 | gb af g2 | ed cB cA | G>B A/G/F/E/ D2 | G2 B2 d2 | gb af g2 | ed cB cA | 
 F/G/A/F/ G2 z2 :: Bd dd e/d/c/B/ | A"^?"c cc d/c/B/A/ | GB BB c/B/A/F/ | G>B A/G/F/E/ D2 | 
 Bd dd e/d/c/B/ | A"^?"c cc d/c/B/A/ | GB BB c/B/A/F/ | G>B A/G/F/E/ D2 | G2 B2 d2 | gb af g2 | 
 ed cB cA | F/G/A/F/ G2 z2 :|  