Form a musical piece based on the provided motif while observing the defined structure.
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
['GAG Bcd g3 b3 bag fga Td3']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
 GAG Bcd | g3 b3 | bag fga | Td3 c3 | BAG Bcd | ^c2 d efg | fed Ad^c | d3- d3 |:  