Develop a musical arrangement based on the stated alphabetical form and the given motif.
X:1
L:1/8
M:4/4
K:Gmix
['B2 c4', 'B2 c2 d8']  
X:1
L:1/8
M:4/4
K:Gmix
 B2 B B B3 B B6 B2 | c4 d6 c4 B c d8 | z A AA A2 B2 | c4 A8 d8 c4 | B6 B2 A8 |: z4 d6 c B A2 G2 | 
 A6 A2 G3 A B2 c2 d8 | z4 e8 e2 d c B2 c2 d8 d2 c B | A3 G G A B c A6 A2 G8 :|  