Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/8
M:2/4
K:G
['FGAd BGGB', 'D2 fddf ec a2 dBBd cA f2']  
X:1
L:1/8
M:2/4
K:G
|: FGAd | BGGB | AFFA | GF E2 | FGAd | BGGB | ceAc | d2 D2 :: fddf | ec a2 | dBBd | cA f2 | BGGB | 
 AF d2 | ceAc | d2 D2 :|  