Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/4
M:4/4
K:C
['B c']  
X:1
L:1/4
M:4/4
K:C
 A B c (B/A/) | ^G A E2 | c3/2 c/ e d | c4 | B c d (c/B/) | e A E2 | A (A/B/) c B | A4 |]  