Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:3/8
K:G
['A/B/cA B/e<dB/']  
X:1
L:1/8
M:3/8
K:G
 dd/B/G/B/ | BA/G/A | AF/D/c | cB/A/B | d/d/e/d/c | BA z | A/B/cA | B/e<dB/ | A/B/cA | B/e<dB/ | 
 BA>G | G2 z |]  