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:Dmix
['A2 G F2 D', 'f2 d']  
X:1
L:1/8
M:6/8
K:Dmix
 (3A/B/c/ | d2 A A2 G | F2 D D2 F | EFE c2 G | E2 C C2 A | d2 B c2 A | B2 G A2 G | F2 D EFG | 
 F2 D D2 :| d | f2 d Ade | f2 d def | e2 c Gcd | e2 c cde | f2 d g2 e | a2 f g2 e | f2 d efg | 
 f2 d d2 :|  