Craft melodious tunes in accordance with the outlined letter representation and the provided thematic element.
X:1
L:1/8
M:2/2
K:F
['(A_B=B) ||S c2 A', 'c2 A', 'CFF FGA ABc c=Bc f2 c AGA']  
X:1
L:1/8
M:2/2
K:F
 (A_B=B) ||S c2 A d2 A | c2 A C3 | CDE FGA | B3 BGA | BAG cBA | B2 G E2 G | ccc cde | d2 c A_B=B | 
 c2 A d2 A | c2 A C3 | CDE FGA | B3 BGA | B2 G C2 A | B2 G E2 G | ccc cde | f3 f2 || D | CFF FGA | 
 ABc c=Bc | f2 c AGA | B2 G E2 D | CDE EFG | GAB c=Bc | e2 d c=Bc | d2 A G3 | CFF FGA | ABc c=Bc | 
 f2 c AGA | B2 G E2 D | CDE EFG | GAB c=Bc | e2 d c2 c | cde f2 AS ||  