Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:4/4
K:A
['AB cBdc BAcB A2 E2 E2 FG', 'A2 eg aAce agba gfag fagf eEGB'  
X:1
L:1/8
M:4/4
K:A
 AB | cBdc BAcB | A2 E2 E2 FG | AGBA cBdc | BABc B2 AB | cBdc BAcB | A2 E2 E2 FG | AGBA FdBG | 
 B2 A2 A2 :: eg | aAce agba | gfag fagf | eEGB e^dfe | =dced c2 ed | cBdc BAcB | AGBA GFED | 
 CEAd cBAG | B2 A2 A2 :|  