Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:2/4
K:Bb
['z fcdB cFF z']  
X:1
L:1/8
M:2/4
K:Bb
 B2 FF | B3 d | cFFe | d3 z | fcdB | cFF z | fcdB | cFF z | B2 cf | d2 cf | B2 z2 |]  