Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
Q:1/4=150
M:4/4
K:C
['e2 d2']  
X:1
L:1/8
Q:1/4=150
M:4/4
K:C
 c2 de f2 d2 | gfga gfed | c2 de f2 d2 | gfga g4 | defd g2 fe | dedc BA G2 | defd g2 fe | dedB c4 | 
 Geee Geee | Geef e2 d2 | Gddd Gddd | Gdde c4 | edef e2 d2 | dcde d4 | gagf edef | e2 d2 c4 ||  