Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/16
M:2/4
K:C
['E G']  
X:1
L:1/16
M:2/4
K:C
 d3 e d2 c2 | c2 A6 | B3 B G2 E G | A8 | A2 d d c2 A A | G2 E6 | G E G A E3 D | C2 A C D4 |]  