Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/8
M:4/4
K:C
['e2 ed cB cd ef', 'ef g2', 'gf e2']  
X:1
L:1/8
M:4/4
K:C
 e2 ed cB cd | ef gf e2 d2 | e2 ed cB cd | ef g2 d4 :: ef ga gf ed | e2 c2 c2 f2 |1 f2 e2 e2 d2 :|2 
 f2 e2 d4 |: ef g2 ef g2 | ef g2 f2 e2 | a2 ag f2 e2 | a2 ag f2 e2 | ef ge fe dc | BA cB c2 gf | 
 e2 dc d2 gf | e2 d2 c2 gf | e2 dc d2 gf | e2 d2 c4 :|  