Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:6/8
K:G
['BBB GBd', 'd3 gfB', 'ABc d3 gfB d3 gfc BBB cAF'  
X:1
L:1/8
M:6/8
K:G
 dc | BBB GBd | cBc ABc | BBB GBd | cAG FGA | BBB GBd | cBc ABc | ded cAG |1 AGF G :|2 AGF G g2 |: 
 fed efg | afd cAF | GBd gdg | afd d2 g | fed efg | afd cAF | ded cAG |1 AGF G g2 :|2 AGF ABc |: 
 d3 gfB | d3 gfB | c3 ABc | ABc ABc | d3 gfB | d3 gfc | BBB cAF |1 AGF GAB :|2 AGF G3 ||  