Develop a piece of music using the specified alphabetic notation system and the provided motif.
X:1
L:1/8
M:4/4
K:D
['dB AFdF AdAB AFdF efdB AFdF ABde', 'a3 f']  
X:1
L:1/8
M:4/4
K:D
|: dB | AFdF AdAB | AFdF efdB | AFdF ABde | fedf e2 :: dB | defg a3 f | b3 f a3 f |1 defg a3 f | 
 bfaf egfe :|2 g3 e f3 e | dgfe dc ||  