Create musical compositions adhering to the given structure and incorporating the provided musical concept.
X:1
L:1/16
Q:1/4=100
M:2/4
K:D
['DEFG A2d2', 'd4 fefd e2c2 dcdB c2A2 fefd e2A2'  
X:1
L:1/16
Q:1/4=100
M:2/4
K:D
|: DEFG A2d2 | B2e2 dcBA | DEFG A2d2 | B2c2 d4 :: fefd e2c2 | dcdB c2A2 | fefd e2A2 | B2c2 d4 :|  