Develop a musical composition using the alphabetic representation of the specified sequence and incorporating the given motif.
X:1
L:1/8
M:2/2
K:D
['a2 f/g/a g2 e/f/g fdAf ec A2', 'AF/G/ Af']  
X:1
L:1/8
M:2/2
K:D
 a2 f/g/a g2 e/f/g | fdAf ec A2 | dAfd afbg | f/g/a Ac d2 D2 :: AF/G/ Af ec A2 | AF/G/ Ag f2 e2 | 
 AF/G/ Af edef | gfed c2 e2 | a2 f/g/a g2 e/f/g | fdaf ecAc | dAfd afbg | f/g/a Ac d2 D2 :|  