Utilize the provided motif and the alphabetically represented musical sequence to craft an original musical composition.
X:1
L:1/4
M:4/4
K:G
['B A']  
X:1
L:1/4
M:4/4
K:G
 G | B B2 A | G2 A B | c4- | c2 z c | d d2 d | e d d B | A4- | A2 z A | B2 B A | G2 A B | c2 c2 | 
 e3 e | d d2 B | A c B A | G4- | G2 z ||  