Develop a musical composition incorporating the given motif while adhering to the outlined alphabetical form.
X:1
L:1/8
M:6/8
K:C
['B2 g ^fed', 'GAB BAG Bcd dcB']  
X:1
L:1/8
M:6/8
K:C
|: ged B3 | B2 g ^fed | _B3 _Bcd | _B3 _B2 f | g2 g ged | B2 g ^fed | c3 c3 | c3 =BAG :: GAB BAG | 
 Bcd dcB | F2 B cBA | E2 B cBA | GAB BAG | Bcd dcB | c3 c3 | c3 BAG :|  