Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/8
M:6/8
K:D
['F3 E3 FEF DEF G3 AGA =cAG', 'G3 d3 fed fgf def g3 bag']  
X:1
L:1/8
M:6/8
K:D
|: F3 E3 | FEF DEF | G3 AGA | =cAG FGA | B3 BAG | ABA ABc | dcA AGF | AGF G3 :: d3 fed | fgf def | 
 g3 bag | fdc d2 =c | B3 BAG | ABA ABc | dcA AGF | AGF G3 :|  