Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/8
M:9/8
K:G
['G2 c BAG Bcd', 'g fed']  
X:1
L:1/8
M:9/8
K:G
 D | G2 c BAG Bcd | ecA ABG FED | G2 c BAG Bcd | efg faf g2 :| g | fed d2 g fed | ecA ABG FED | 
 fed d2 g fed | efg faf g2 g | fed d2 g fed | ecA ABG FED | G2 c BAG Bcd | efg faf g2 ||  