Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:6/8
K:F
['FAc agf dfc Bff AcA', 'faf gec'  
X:1
L:1/8
M:6/8
K:F
 C | FDC FAc | agf dfc | Bff AcA | B3 GEC | FAG FAc | agf dfc | Bff AcA | BGE F2 :| c | faf gec | 
 dff cAc | faf gec | def fga | bag afd | cdB AFG | ABc fcA | BGE F2 :|  