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
['GAG G2', 'ded d2', 'cBA BGG dGG BAG', 'GBd GBd', 'cBA GBd gfg agf g2', 'dBG GDG']  
X:1
L:1/8
M:6/8
K:G
 D | GAG G2 A | B2 G d2 B | GAG G2 B | A2 B dcA | GAG G2 A | BAG ABc | d2 e fef | A2 B cBA :: 
 ded d2 c | B2 G d2 B | ded d2 B | A2 B cBA | ded d2 c | BAG ABc | d2 e fef | A2 B cBA :: BGG dGG | 
 BAG dBG | AFF cFF | AFA cBA | BGG dGG | BAG ABc | d2 e fef | A2 B cBA :: GBd GBd | GBd dcB | 
 GBd GBd | A2 B cBA | GBd GBd | GBd dcB | GBd fef | A2 B cBA :: GBd gfg | agf g2 | BGd g2 B | 
 A2 B cBA | GBd gfg | agf g2 g/a/ | bag agf | A2 B cBA :| | dBG GDG | BGB d2 B | dBG GDG | 
 A2 B cBA | dBG GDG | BGB dcB | GBd fef | A2 B cBA :|  