Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
M:6/8
K:G
['B2 B GBd', 'fed cAG FGA']  
X:1
L:1/8
M:6/8
K:G
 D | B2 B GBd | cBc ABc | B2 B GBd | cAG FGA | B2 B GBd | cBc ABc | (d/e/f)(d c).A.F | AGG G2 :: 
 d | f2 f fed | cAG FGA | g2 g gfg | afd d2 (f/g/) | fag fed | cAG FGA | (B/c/d)B{d} c.A.F | 
 AGG G2 :|  