Create a musical composition incorporating the given motif following the designated alphabetical pattern.
X:1
L:1/8
M:4/4
K:G
['B2 ABAGFEDC B,DGBd z B2']  
X:1
L:1/8
M:4/4
K:G
 DD | G2 GGGDB,G, | D4 z2 B2 | A3 BAGFE | D4 z2 B2 | ABAGFEDC | B,DGBd z B2 | ABAGFEDC | 
 B,DGBd z B2 | A3 B A3 B | AAdB A2 z A | e2 z2 edBG | D2 F2 G2 |]  