Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:2/2
K:A
['f fecA d2 fd e2 cA dBBa', '(f/g/a) ec']  
X:1
L:1/8
M:2/2
K:A
 f | fecA d2 fd | e2 cA dBBa | fecA d3 =g | fded cAA :| g | (f/g/a) ec eeg | (f/g/a) ec fBBg | 
 a ec e2 e=g | fded cAAg | (f/g/a) ec e2 eg | fdec fBBg | aefc e3 =g | fded cAA ||  