Craft melodious tunes in accordance with the outlined letter representation and the provided thematic element.
X:1
L:1/8
Q:1/4=132
M:6/8
K:Bb
['B3 GAB c2 B AFA B3']  
X:1
L:1/8
Q:1/4=132
M:6/8
K:Bb
 z3 z2 F | B2 B Bcd | B3 GAB | c2 B AFA | B3 z2 F | B2 B Bcd | B3 GAB | c2 B AFA | B3 e3 | 
 d2 c d2 e | f3 g2 g | f2 e d2 B | e3 d2 e | f2 e dec | B3 GAB | c2 B AFA | B3 z2 |]  