Develop a musical composition based on the specified form and using the given motif.
X:1
L:1/8
M:3/4
K:Bb
['d2 BG']  
X:1
L:1/8
M:3/4
K:Bb
 FABdfg | e2 B2 df | gc e2 df | e2 _AG F2 | =AB d2 BG | E3 FGF | AB d2 BG | E2 GFGF |]  