Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/8
M:4/4
K:Amix
['a2 e2 c2 A2', 'ABcd e2 f2 gfed e2 c2 dcBA']  
X:1
L:1/8
M:4/4
K:Amix
|: (3efg | a2 e2 c2 A2 | a2 e2 c2 A2 | dcBA GABd | g2 B2 B2 fg | a2 e2 c2 A2 | a2 e2 c2 A2 | 
 dcBA GABd | c2 A2 A2 :: E2 | ABcd e2 f2 | gfed e2 c2 | dcBA GABd | g2 B2 B2 d2 | ABcd e2 f2 | 
 gfed e2 c2 | dcBA GABd | c2 A2 A2 :|  