Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:2/4
K:D
['', 'FA AB/c/ d>c de/f/ ge fd', 'fa a/b/a/f/ ed']  
X:1
L:1/8
M:2/4
K:D
 A/G/ |: FA AB/c/ | d>c de/f/ | ge fd | BA A/B/A/G/ | FA AB/c/ | d>c de/f/ | ge fd | BA A2 :| 
 fa a/b/a/f/ | ed de | fa a>f | ed e2 | fa a/b/a/f/ | ed de/f/ | ge fd | BA A2 :|  