Create musical compositions adhering to the given structure and incorporating the provided musical concept.
X:1
L:1/8
M:6/8
K:Dmix
['EDE cBc E2', 'f2 d d^cd', '', 'cGE EDC', 'eag ed^c d2'  
X:1
L:1/8
M:6/8
K:Dmix
 d^cd A2 G | F2 D DED | EDE cBc | E2 D DFA | dcB cBA | BAG A2 G | EDE cBc | E2 D D3 :: f2 d d^cd | 
 f2 d d^cd | edB c2 d | ede age |1 f2 d d^cd | f2 d d^cd | ede age | ed^c d2 e :|2 f3 gfg | 
 agf gfe | fed eag | ed^c d2 A ||"^variations of 1st part" |: d^cd A2 G | F2 D DED | E3 cGE | 
 EDC DFA | dcB cBA | BAG A2 G | E3 cGE | EDC D3 :: f3 d^cd | fdd d^cd | edB c2 d | ede age |1 
 fdd d^cd | f3 d^cd | ede eag | ed^c d2 e :|2 f3 gfg | agf efg | fed eag | ed^c d2 A ||  