Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/4
M:2/4
K:C
['c B A G G F E2']  
X:1
L:1/4
M:2/4
K:C
 c B | A G | G F | E2 | c B | A G | G F | E2 | D D | E E | F G | E2 | C E | G E | G E | c2 |]  