Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
M:2/4
K:D
['=c2 B2 A3 (f/>e/) dc AG FG', 'f>g ag f2 ed'  
X:1
L:1/8
M:2/4
K:D
 A2 AG | (FG) (AB) | =c2 B2 | A3 (f/>e/) | dc AG | FG Ad | e2 f>e | d3 z | A2 AG | (FG) .A.B | 
 =c2 B2 | A3 (f/>e/) | dc AG | FG Ac/d/ | e2 f>e | d4 || f>g ag | f2 ed |{d} c2 AG | A4 | f>g ag | 
 f2 ed | cd e>f | d4 | .A.A .A.G | .F.G .A.B | .c2 .c2 (BG) | .A.A f>e | dc AG | FG Ac/d/ | 
 e2 f>e | d4 ||  