Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
M:4/4
K:C
['C2 EG', 'g>age f>gfd e>fec dB G2 GABc defd']  
X:1
L:1/8
M:4/4
K:C
 C2 EG cGEG | C2 EG FDB,D | C2 EG cGEG | FdEc E2 D2 :| g>age f>gfd | e>fec dB G2 | GABc defd | 
 gagf{f} e2 dc | g>age f>gfd | e>fec dB G2 | GABc defd | ecdB c2 c2 ||  