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
['', 'GD B>A GB d>^c de', 'Gg gf ed d>B de dB']  
X:1
L:1/8
M:2/4
K:G
 B/A/ |: GD B>A | GB d>^c | de dG | BAAB/A/ | GD B>A | GB d>^c | de dB | AG GB/A/ :: Gg gf | 
 ed d>B | de dB | GA B>A | Gg gf | ed d>B | de dB | AG GB/A/ :|  