Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
M:3/4
K:G
['', 'DGA Bd B2 GA F2 FG FD', 'gf ed ef ga']  
X:1
L:1/8
M:3/4
K:G
 DGA |: Bd B2 GA | F2 FG FD | E6- | E3 DGA | Bd B2 GA | F2 FG FD | G6- |1 G3 DGA :|2 GA Bd gf |: 
 e2 B2 gf | e2 c2 gf | ed ef ga | b2 ba gf | e2 B2 gf | e2 c2 gf | ed ef ga |1 g4 gf :|2 g3 ||  