Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
M:2/2
K:A
['e2 c2', 'AB cBAc']  
X:1
L:1/8
M:2/2
K:A
 e3 f e2 c2 | d2 f2 B4 | e3 f e2 c2 | fefg a2 a2 | e2 ef e2 c2 | defd B3 B | cBAc BA G2 |1 
 A4 A4 :|2 A4 A2 |: AB | cBAc BAGA | B6 AB | cBAc BA G2 | A3 B A2 AB | cBAc BAGA | B3 c B2 AB | 
 cBAc BA G2 | A4 A4 :|  