Construct a piece of music by incorporating the given motif and adhering to the determined musical form.
X:1
L:1/8
M:6/8
K:G
['=F3 G2 A _BAGcBA G4-']  
X:1
L:1/8
M:6/8
K:G
 G | G2 GGAG | =F3 G2 A | _BAGcBA | G4- GG | _B2 =F B2 c | d3 dcc | dddGAG | =F3 G2 A | _BAGcBA | 
 G4- G |]  