Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
Q:1/2=60
M:2/2
K:G
['B2 GB', 'Bddg e2 dc'  
X:1
L:1/8
Q:1/2=60
M:2/2
K:G
 c | B2 GB c2 Ac | B2 GB AFDc | B2 GB c2 Ac | BGAF G3 :: c | Bddg e2 dc | B2 GB AFDc | Bddg e2 dc | 
 BGAF G3 :|  