Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
M:2/2
K:D
['A F>GA>d B>dA>d G<dF>d B<EE>G F>GA>d B<dA>d', 'd<DD a/g/ f>ad>a f<da>d'  
X:1
L:1/8
M:2/2
K:D
 A | F>GA>d B>dA>d | G<dF>d B<EE>G | F>GA>d B<dA>d | B>AB>c d<DD :| a/g/ | f>ad>a f<da>d | 
 c<eA>e c>eA a/g/ | f<ad>a f<da>d | B>AB>c d<DD a/g/ | f>ad>a f<da>d | c<eA>c c>eA a/g/ | 
 f<dg>e a>fb>g | f>ae>f d<DD |]  