Develop a piece of music by incorporating the provided motif and following the outlined musical structure represented by alphabet characters.
X:1
L:1/8
Q:1/8=180
M:4/4
K:Amin
['GABd edBd eaa^f gedB AcBG', 'a3 b age^f']  
X:1
L:1/8
Q:1/8=180
M:4/4
K:Amin
 A3 z AGED | GABd edBd | eaa^f gedB | AcBG AGED | A2 (3ABA GEDE | GABd edBd | eaa^f gedB | 
 AcBG A3 z :| a3 b age^f | (3g^fe dB GABd | eg^fa gedB | AcBG AGEg | a3 b age^f | gedB GABd | 
 ea a2 gede | (3gab a^f gedB ||  