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
['GA B2 BB B2']  
X:1
L:1/8
M:4/4
K:G
 GA |"G" B2 BB B2 c>B |"D" BA GA"G" B2 Bc | d2 d>e dB GB |"D7" A6 GA |"G" B2 BB B2 c>B | 
"D" BA GA"G" B2 Bc | d2 BG"D7" A2 B>A |"G" G8 |"D7" A4"G" B4 |"A7" ^c2 ^c2"D7" d2 GA | 
"G" B2 BB B2 =c>B |"D7" BA GA"G" B2 Bc |"G" d2 BG"D7" A2 B>A |"G" G6 |]  