Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/4
M:4/4
K:C
['E G']  
X:1
L:1/4
M:4/4
K:C
 z2 z D | E G E D | E2 C3/2 D/ | E G A c | c3 A | B A A c | B G E3/2 E/ | G G A3/2 A/ | A3 (E/G/) | 
 G G G A | A G E G | A c c B | A3 D | E G A G | E3/2 E/ E C | D D C3/2 C/ | C3 z |]  