Compose melodious music utilizing the prescribed letter representation and integrating the given thematic element.
X:1
L:1/4
M:4/4
K:F
['A F', 'A F', 'A c']  
X:1
L:1/4
M:4/4
K:F
"^Once to yourself" (F/G/) | A F B2 | A F G2 | A c B (A/B/) | c C F2 || 
"^No. 1 twice"!D.S.! A F B2 | A F G2 | A c B (A/B/) | c C F2 :|"^No. 2 twice" A c B2 | A c G2 | 
 A c B (A/B/) | c C F2!D.S.! :|  