Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
M:6/8
K:Bb
['B>cB F2 D', 'e2 g']  
X:1
L:1/8
M:6/8
K:Bb
 F | B>cB F2 D |{=E} F2 F F2 d | e>fe dcB | (d3 c2) .F | B>cB F2 D | F2 F FBd | f<dB c2 d | 
 (B3 B2) :| e | d2 f{g} f2 d | e2 g cde |{e} dcB{c} BAB | c2 A{=E} F2 e | d2 f{g} f2 d | e2 g cde | 
{e} dcB{c} BAB | (d3 c2) .F | B>cB FDE | F2 F F2 d | e>fe dcB | (d3 c2) .F | B>cB F<DF | 
{E} G2 B e2 g | f<dB c2 f | (B3 B2) ||  