Craft melodious tunes in accordance with the outlined letter representation and the provided thematic element.
X:1
L:1/8
M:6/8
K:Bb
['F B2', 'G2 A B2']  
X:1
L:1/8
M:6/8
K:Bb
 F |:"Bb" B2 B Bdc | BAG F2 B |"Cm" c2 c ced |"F" cBA"Eb" G2 A |"Bb" B2 B Bdc | Bdf"Gm" g2 f | 
"F" fed"Bb" dcB |1"Cm" cdB"F" G2 A :|2"Cm" cdc"Bb" B2 g |:"Bb" f2 B{Bc} BAB |"Cm" g2 c{cd} c=Bc | 
"Eb" edc dcB |"F" cdB G2 F |"Bb" B,FB,"Gm" GB,F |"Cm" CEC"F" FCE |"F" ABc"Gm" GAB | 
"F" AGA"Bb" B3 :|  