Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/8
M:4/4
K:Dmix
['FAAF BAGF', 'FAAd dAFA', 'FFdF FdFd'  
X:1
L:1/8
M:4/4
K:Dmix
|: AG | FAAF BAGF | GBBG cBAG | FAAF BAGF | GE E2 GFED | FAAF BAGF | GBBG cBAG | FAAF GE E2 | 
 FD D2 D3 A :: FAAd dAFA | GBBd dBAG | FAAd dAFA | GE E2 GFED | FAAd dAFA | GBBd dBAG | 
 FAAF GE E2 | FD D2 D3 A :: FFdF FdFd | GGdG GdGd | FFdF FdFd | EdFd GdEd | FFdF FdFd | GGdG GdGd | 
 FAAF GE E2 | FD D2 D3 A :|  