Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/8
M:4/4
K:G
['(3B,C^C D>DE>F G>FG>B A c3 E2 A>G']  
X:1
L:1/8
M:4/4
K:G
 (3B,C^C | D>DE>F G>FG>B | A c3 E2 A>G | F3 C E3 B, | D6 (3B,C^C | D>DE>F G>FG>B | A c3 E2 A>G | 
 F3 D B3 A | G6 d>^c | =c>c F4 d>e | B>D B4 B>c | B2 A4 B>A | G>E D4 d>^c | =c>F A4 d>e | 
 B>D B4 (3BBB ||  