Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/4
Q:1/8=220
M:3/4
K:G
['d B', 'd e']  
X:1
L:1/4
Q:1/8=220
M:3/4
K:G
"^moderate" d | e d B | G A B | E G E | D2 E/F/ | G F G | e d B | A3- | A2 d | e d B | G A B | 
 E G c | e2 f/e/ | d B G | A E F | G3- | G2 || d | e d e | g f e | f e d | B2 d | e d e | g f e | 
 g3- | g2 g/f/ | e d B | G A B | E G c | e2 f/e/ | d B G | A E G | G3- | G2 |]  