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:Dmix
['(3.A.c.A GB A2 dB', 'ed d2']  
X:1
L:1/8
M:4/4
K:Dmix
 (3.A.c.A GB A2 dB | cAAG EFGc | (3.A.c.A GB A2 dB | cAGE ED (3DDD | (3.A.c.A DB DAdB | cAAG EFGc | 
 (3.A.c.A DB D2 dB | cAGE ED (3DDD || ed d2 ed (3Bcd | ed d2 eaag | ed d2 edcA | GAcd ed d2 | 
 ed (3.B.^c.d edcd | ed (3.B.^c.d eaag | afge fde^c | Add^c dedc ||  