Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
Q:1/4=180
M:6/8
K:G
['g dBG Bcd E2 E E2 c', 'bgb afd efg gfe']  
X:1
L:1/8
Q:1/4=180
M:6/8
K:G
 g | dBG Bcd | E2 E E2 c | AFD DEF | G3 G2 g | dBG Bcd | E2 E E2 c | AFD DEF | G3- G :: g/a/ | 
 bgb afd | efg gfe | dBg dBG | AFD D2 b | bgb afd | efg gfe | f/g/af ge^c | d3 de=f | ece dBd | 
 cac BgB | Ace dBG | FGA DEF | GAB EFG | ABc def | gdB cAF | G3 G2 :|  