Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/8
M:2/2
K:D
["(3ABc d2 d2 defg afad' afdf B2", 'd2 ag fada fada eaca eaca dfBf']  
X:1
L:1/8
M:2/2
K:D
 (3ABc | d2 d2 defg | afad' afdf | B2 B2 BcdB | A2 AB AFDF | GFGA Bdce | defg abc'd' | afdf gece | 
 d2 d2 d2 :: ag | fada fada | eaca eaca | dfBf dfBf | cf^Af cfAf | GFGA Bdce | defg abc'd' | 
 afdf gece | d2 d2 d2 :|  