Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/8
M:6/8
K:G
['DGG GAG FEF', 'dgg def']  
X:1
L:1/8
M:6/8
K:G
 DGG GAG | FEF Ddc | B3 GBd | cAG FEF | DGG GAG | FEF DBc | ded cAF | AGF G3 :: dgg def | dgg cBc | 
 dgg def | GFG ABc | def g3 | agf g2 e | fed cAF | AGF G3 :|  