Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
Q:1/8=100
M:6/8
K:Bb
['F B2 d', 'f e2 c c2 A B2 d', 'B2 d', 'AGA B3-']  
X:1
L:1/8
Q:1/8=100
M:6/8
K:Bb
"^Andante" F | B2 d (def) | ecA FGE | DFB BAB | d2 c c3 | ecA fed | dBb gec | B2 B{B} AGA | 
 B3- B2"^$" |:"^p" F |"^Song" B2 d d2 f | e2 c c2 A | B2 d e>fg | (d3 c)zF | e2 d cde | fdb gec | 
 B2 B (c<fA) | B3- B2 :: (A/B/) | c2 c f=ed | dcc c2 A | B2 c (dc)B | (B3 A2) (A/B/) | c2 c f=ed | 
 c2 b b2 g |{f} =edc cde | f3 z2 F | B2 d d2 f | e2 c c2 A | B2 d e>fg | (d3 c)zF | e2 d cde | 
 (fd).b (ge)c | B2 B (c<f)c | B3- B2 :|"^Sym:" d | ecA fec | (dB).b (ge).c | B2 B{B} AGA | 
 B3- B2 ||  