Compose music by following the designated structure and integrating the suggested musical idea.
X:1
L:1/8
M:4/4
K:G
['B BB']  
X:1
L:1/8
M:4/4
K:G
 B | BB Bc BG EG | BA FF/G/ E2 z E | EE EG B2 Bd | dc Ac B2 z B | BB df f2 fe | 
 ed BB Bc/B/ AB/G/ E>G | B>A FF E2 z ||  