Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/8
M:2/4
K:D
['D>D FA f/f/f/f/ fe d>F B>F AB/A/', 'a>f ab']  
X:1
L:1/8
M:2/4
K:D
|: D>D FA | f/f/f/f/ fe | d>F B>F | AB/A/ G2 | A/A/A/A/ ce | gg/g/ gf/f/ | eB d>c |1 B2 A>F :|2 
 d2 |: d/e/f/g/ | ab a>f | ab a>f | Ad ce | B2 A>f | ab a>f | ab a>d | Ag fe |1 Bc :|2 Bc d2 ||  