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
['BEA |[M:6/8][K:D]SOSOO .!fermata!PMTuCOMD', 'AGE GAB cBc', 'ABc dcd edc d2 c']  
X:1
L:1/8
M:4/4
K:C
 BEA |[M:6/8][K:D]SOSOO .!fermata!PMTuCOMD |: DED AGE | GAB cBc | DED AGE | GcA GEC | DED AGE | 
 GAB cBc | edc dcA | GcA GED :: | ABc dcd | edc d2 c | ABc d2 e | fed cAG |1 ABc dcd | edc d2 c | 
 GAB cBc | GcG GEC :|2 fed edc | dcA c2 A | GAB c2 A | GcA GED |]  