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
['a2 ed', 'f2 ed']  
X:1
L:1/8
M:2/2
K:A
|: A2 cA eAcA | EAce dAcA | EAeg fefg |1 a2 ed ceBe :|2 a2 ed cefg || agae agae | f2 ed cefg | 
 a2 g2 f2 ed | f2 ed cefg | agae agae | f2 ed cefg | a2 c2 f2 ed |[M:6/4] f2 ed c2 E2 B2 AA ||  