Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/16
M:8/16
K:Dmin
['', 'af d2d (^c2A) cd e3 (f2a) g=b', '(3(efg) a6 af d2d (^c2A) cd e3']  
X:1
L:1/16
M:8/16
K:Dmin
 af |: d2d (^c2A) cd | e3 (f2a) g=b | (af2) e2d (3(^c=Bc) | (d2A) F2D af | d2d (^c2A) cd | 
 e3 (f2a) g=b | (af2) e2d (3(^c=Bc) |1 d6 af :|2 d6 a2 |]: (fga) (fga) (3(fga) | b6 g2 | 
 (efg) (efg) (3(efg) | a6 af | d2d (^c2A) cd | e3 (f2a) (g=b) | (af2) e2d (3(^c=Bc) |1 d6 a2 :|2 
 d6 |]  