Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/8
M:3/4
K:D
['A2 a3 f g>f d2 f2 f>e', 'A>B A>G F>E D>g fe (3def (3gag']  
X:1
L:1/8
M:3/4
K:D
 A2 a3 f | g>f d2 f2 | f>e e>d e>f | (3gag (3fed e>c | A2 a3 f | g>f d2 f2 | f>e e>d e>f | 
 (3gag (3fed (3cBc | d2 d4 :: A>G A>B A>G | F>E D>g fe | (3def (3gag (3fed | 
 cc/c/ cB/B/ BAA>G A>B A>G | F>E D>g fe | (3def (3gag (3fed | (3cBc d4 :|  