Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
M:2/4
K:G
['G2 d2 edcA A2 G z']  
X:1
L:1/8
M:2/4
K:G
 GcB | A/A/GFF | G2 d2 | edcA | A2 G z | z GcB | AGFF | G2 d2 | edcA | A2 G z | z |]  