Compose a music piece that includes the specified motif while adhering to the outlined alphabetical sequence.
X:1
L:1/8
M:4/4
K:G
['DDG G2 GGAGFE ED z4 DG G2']  
X:1
L:1/8
M:4/4
K:G
 DDG | G2 GGAGFE | ED z4 DG | G2 G2 AGFE | E D2 z2 GFG | AF D2 z GGB | B2 A2 z AAB | d c3 B2 cA | 
 G2 z3 |]  