Utilize the provided motif and the alphabetically represented musical sequence to craft an original musical composition.
X:1
L:1/8
Q:1/2=108
M:2/2
K:Gmix
['BG B/c/d', 'Bcde fgfd']  
X:1
L:1/8
Q:1/2=108
M:2/2
K:Gmix
 c | BG B/c/d BG B/c/d | AFFA c2 cA | BG B/c/d BG B/c/d | gGGB d2 d :| c | Bcde fgfd | cAFA c2 cA | 
 Bcde fgfd | gGGB d2 dc | Bcde fgfd | cAFA c2 cA | Bcde fgfd | gdec ded |]  