Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:2/2
K:C
['A c C2 E G2 G_B A(FEC)', 'gc acgc'  
X:1
L:1/8
M:2/2
K:C
 A | c C2 E G2 G_B | A(FEC) DF_B,D | C/D/E/F/ GE G2 cG | Aagf ecc :| e | (c/d/e/f/) gc acgc | 
 ecgc B(dd)e | c/d/e/f/ gc acgc | ecgc G(cc)e | (c/d/e/f/) gc acgc | fdec B>cde | cGEC FAG_B | 
 Aagf ecc ||  