Develop a musical composition using the provided structural guidelines.
'Binary', 'Sectional: Verse/Chorus'  
X:1
L:1/8
M:6/8
K:D
|: A | FAA dAA | BAB dAG | FAA dfe | dBB B2 A | FAA dAA | BAB def | gfe f2 e | dBB B2 :: 
[K:Bmin] g | fbb faa | fef d2 e | fbb faa | fed ede | fbb faa | fef def | gfe f2 e | dBB B2 :|  