Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
M:4/4
K:Amin
['e>d B>A', 'e>d B<g A2'  
X:1
L:1/8
M:4/4
K:Amin
 A2 a2 g>e a<g | e>d B>A G>A B<G | A2 a2 g>e g2 |1 e>d B<e A2 A2 :|2 e>d B<e A2 A>g |: 
 e>d B>A G>A B<G | e>d B>A B2 B<g | e>d B>A G>A B<G |1 e>d B<g A2 A>g :|2 e>d B<g A2 A>B ||  