Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:4/4
K:Amix
['A>B dB e2', 'eg a2'  
X:1
L:1/8
M:4/4
K:Amix
 e2 | A>B dB e2 dB | A2 BG A2 e2 | A>B de a2 gf | d2 g>f f<e ef/g/ | a>f ed e2 de/f/ | 
 g>d BA G2 d>G | A2 BG A>B dB | e2 A2 A2 || Bd | e2 de g2 eg | a2 ge d2 A>B | d2 eg a2 gf | 
 d2 g>f fe ef/g/ | ag ed e2 de/f/ | g>d BA G2 d>B | A2 BG A>B dB | e2 A2 A2 ||  