Compose a musical piece that incorporates the given motif and adheres to the specified form.
X:1
L:1/8
M:6/8
K:D
['g fed cAc', 'B A2 a acA'  
X:1
L:1/8
M:6/8
K:D
 g | fed cAc | ecA A2 g | fed cAc | dBG G2 g | fed cAc | def gfe | agf gfe | dBG G2 :: B | 
 A2 a acA | acA A2 B | A2 a acA | dBG G2 B | A2 a acA | acA acA | agf gfe | dBG G2 :|  