Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
M:4/4
K:G
['gfga gdBd', 'a^gab afdf']  
X:1
L:1/8
M:4/4
K:G
 G2 FG EF D2 | gfga gdBd | efge dBGB | cABG AFFD | G2 FG EF D2 | gfga gdBd | efge dBGB |1 
 cBAF G2 DF :|2 cBAF G2 Bd |: gfga gdBd | gfga gdBd | a^gab afdf | a^gab afdf | gfga gdBd | 
 gfga gdBd | efge dBGB |1 cBAF G2 Bd :|2 cBAF G2 DF ||  