Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
M:6/8
K:Dmix
['F3 AGG AFD GEA D3', 'GEA D3'  
X:1
L:1/8
M:6/8
K:Dmix
|: AG | F3 AGG | AFD GEA | D3 c2 A | ded cAG | F3 AGG | AFD GEA | D3 GEA |1 D3 DAG :|2 D3 D2 B |: 
 c3 cAd | dcA GEA | D3 c2 A | ded cAB | cBc edd | ecA GEA | D3 GEA |1 D3 D2 B :|2 D3 DAG ||  