Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
Q:1/4=160
M:2/4
K:G
['d>B g2', 'dB g2'  
X:1
L:1/8
Q:1/4=160
M:2/4
K:G
 d>B g2 | d>B g2 | d>Bc>A | BG G2 | dB g2 | dB g2 | fa A^c | d4 :: dB e2 | cA d2 | BGcB | AF D2 | 
 dB g2 | dB g2 | ecBA | G4 :|  