Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:4/4
K:G
['A2 BA']  
X:1
L:1/8
M:4/4
K:G
 DGBG AGBA | GEED cABG | DGBG A3 B | GEED EFGA | B2 dB A2 BA | GE E2 c2 BG | DGBG A2 BA | 
 GEED E E2 D | GABd edge | dB B2 dBAB | GABd e2 ge | dBAG E G3 | GA (3B/c/d/ egge | dB B2 dega | 
 (3b/a/g/ ag egdg | gedB AGEG |]  