Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:6/8
K:C
['cec GEC', 'gec dBG'  
X:1
L:1/8
M:6/8
K:C
 cec GEC | Add d2 d | cec GEC | ecc c2 c | cec GEC | Add d2 d | cec GEC | ecc c2 z :: gec dBG | 
 gec dBG | agf edc | BGG G2 G | cdc cAA | ded d2 (e/f/) | gec AdB | ecc c2 z :|  