Craft melodious tunes in accordance with the outlined letter representation and the provided thematic element.
X:1
L:1/8
Q:1/2=80
M:4/4
K:C
['G2 GG F2 GA', 'FDEF G2 GG F2 GA', 'z g2 gg gfgf edcB ABce d2']  
X:1
L:1/8
Q:1/2=80
M:4/4
K:C
 C |[K:G] b a.GD | G2 GG F2 GA | BEAG FDEF | G2 GG F2 GA | BcAF G3 || .g | .f.e.d.c .B.A.G.g | 
 .f.e.d.c .B.A.G.g | .f.e.d.c BBcd | eEAG FDEF | G2 GG F2 GA | BEAG FDEF | G2 GG F2 GA | BcAF G3 || 
 z | g2 gg gfgf | edcB ABce | d2 dd dcde | fgec d3 z | c2 cc cBcd | eEAG FDEF | G2 GG GFGe/c/ | 
 BcAF G3 |]  