Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:6/8
K:G
['gdc BAG', 'Bdd Acc']  
X:1
L:1/8
M:6/8
K:G
 e/f/ | gdc BAG | FGA AFD | gdc BAG | FAA A2 e/f/ | gdc BAG | FGA AFD | BdB cAF | 
 G[Gg][Gg] [Gg]2 :|[K:Bb] B/A/ | Bdd Acc | Bdd Acc | Bdg fdB | Acc c2 B/A/ | Bdd Acc | Bdg fab | 
 fdB ecA | BBB B2 :|  