Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:2/2
K:Bmin
['F3 E F2 BA', 'c B3']  
X:1
L:1/8
M:2/2
K:Bmin
 F3 E F2 BA | F2 EC A,B,CE | F3 E F2 BA | FAEA, CB,CE :| cBAB c B3 | ceAB cafe | cBAB c B3 | 
 EFAB c B3 | cBAB c B3 | ceAB cafe | B c2 A BcBA | EFAB cABA ||  