Create a musical composition incorporating the given motif following the designated alphabetical pattern.
X:1
L:1/16
Q:1/8=80
M:2/4
K:G
['GA B2B2B2 AG B2B2B2g2 d2B2 cBAG B2A2A2', 'a2A2A2 GA B2B2 cBAG B2d2g2 ga bagf']  
X:1
L:1/16
Q:1/8=80
M:2/4
K:G
"^allegro spiritoso" GA | B2B2B2 AG | B2B2B2g2 | d2B2 cBAG | B2A2A2 GA |"^5" B2B2 cBAG | B2d2g2ga | 
 bagf agfe | d2B2B2 || Bc |"^9" d2B2g2 Bc | d^cde d2B=c | d2B2g2 fg | a2A2A2 GA |"^13" B2B2 cBAG | 
 B2d2g2 ga | bagf agfe | d2B2B2 Bc |"^17" d2B2g2 Bc | d^cde d2B=c | ^cdef ga^ab | a2A2A2 GA | 
"^21" B2B2 cBAG | B2d2g2 ga | bagf agfe | d2B2 B4 |]  