Craft melodious tunes in accordance with the outlined letter representation and the provided thematic element.
X:1
L:1/8
M:2/4
K:G
['GD GA Be eg/e/ dB', 'e/f/ gf ed ef ge dB']  
X:1
L:1/8
M:2/4
K:G
 B/A/ | GD GA | Be eg/e/ | dB AG/A/ | BA AB/A/ | GD GA | Be eg/e/ | dB AB/A/ | G2 G :| e/f/ | 
 gf ed | ef ge | dB AG/A/ | BA A |1 e/f/ | gf ed | ef ge | dB AB/A/ | G2 G :|2 B/A/ | GD GA | 
 Be eg/e/ | dB AB/A/ | G2 G |]  