Develop a piece of music using the specified alphabetic notation system and the provided motif.
X:1
L:1/8
Q:1/8=120
M:2/4
K:Amin
['cd e^f', 'ag ed']  
X:1
L:1/8
Q:1/8=120
M:2/4
K:Amin
 AB cd | e^f g2 | a>g ed | B>A G2 | A>B cd | e^f ge | ag/e/ dB | A2 A2 :| ag ed | e^f g2 | ag ed | 
 BA G2 | A>B cd | e^f ge | ag/e/ dB | A2 A2 :|  