Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
Q:1/8=320
M:6/8
K:D
['FDD ADD FDD AGF', 'FGA dcd FDD AGF']  
X:1
L:1/8
Q:1/8=320
M:6/8
K:D
 A | FDD ADD | FDD AGF | GEE BEE | GEE BAG | FDD ADD | FDD AGF | G2 A B2 A | BdF E2 :| D | 
 FGA dcd | FDD AGF | GEE BEE | GEE BAG | FGA dcd | FDD AGF | G2 A B2 A | BdF E2 :|  