Compose a piece of music that adheres to the specified alphabetical framework and includes the provided theme.
X:1
L:1/8
M:2/4
K:G
['GB dg']  
X:1
L:1/8
M:2/4
K:G
 D | GB dg | fe z e | dB GG | A/d/(^c/d/) e/d/=c/A/ | GB dg | (a>g) (f>e) | d>c |]  