Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:2/4
K:Amin
['A>B cd ea ge', 'ea ag/a/ ba'  
X:1
L:1/8
M:2/4
K:Amin
 A>B cd | ea ge | d>e dB | GB dB | A>B cd | ea ge | dB gB | BA A2 :: ea ag/a/ | ba ge | ea ag/a/ | 
 ba g2 | ea ag/a/ | ba ge | d/e/d/B/ gB | BA A2 :|  