Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:2/4
K:G
['z A ABAB A2 z']  
X:1
L:1/8
M:2/4
K:G
 A/A/ | ABAB | A3 D | ccAA | BBGG | AAAA | d3 D | ccAA | BBGG | AAdd | B2 z A | ABAB | A2 z A | 
 ABAB | A2 z A | ABAB | A2 z A | ABAB | A2 z D | ccAA | BBGG | AAAA | d3 D | ccAA | BBGG | AAdd | 
 G2 z |]  