Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:4/4
K:D
['FD (3DDD FAAc', 'g2 bg f2 af']  
X:1
L:1/8
M:4/4
K:D
 FD (3DDD FAAc | BEGE BEGE | FD (3DDD FAAc | (3Bcd eg fd d2 :| g2 bg f2 af | egfd eB B2 | 
 g2 bg f2 af | efge fd d2 | ggbg ffaf | egfd edBd | ABde fedB | AGFE FD D2 ||  