Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
Q:1/8=180
M:2/2
K:D
['F2 EF D2 DE', '(3fed ec dcAB'  
X:1
L:1/8
Q:1/8=180
M:2/2
K:D
 F2 EF D2 DE | FDED FDED | F2 EF D2 DE |1 FABc dBAG :|2 FABc d2 de || fd d2 fd d2 | 
 (3fed fg a2 (3bag | (3fed ec dcAB | cdcA Ggfg | fd d2 fd d2 | fedc d2 de | (3fed ec dcAB | 
 cAGF GBAG"_DC" ||  