Produce pleasing melodies that correspond with the indicated letter notation and incorporate the suggested theme.
X:1
L:1/16
Q:3/8=50
M:3/8
K:Bb
['B,2>C2DE DFdFdF', 'B6 B,2>D2FB dc=BcBc F2>F2Ac cBABAB B,2>C2DE DFdFdF', 'GBeBgB gagaga f4 BA GBeBgB GBeBgB gagafd', 'gb baa2 fd']  
X:1
L:1/16
Q:3/8=50
M:3/8
K:Bb
"_Allegretto" B,2>C2DE | DFdFdF | EFcFcF | DFBFd2 | B,2>C2DE | DFdFdF | EFcFcA | B6 :: B,2>D2FB | 
 dc=BcBc | F2>F2Ac | cBABAB | B,2>C2DE | DFdFdF | EFcFcA |1"^*" B6 :|2 B4 |]:[K:Eb] BA | GBeBgB | 
 GBeBgB | gagaga | f4 BA | GBeBgB | GBeBgB | gagafd | e4 :: Bc | BcBcde | B4 gb | baa2 fd | 
 egb2 Bc | BcBcde | B4 gb | baa2 fd | e4 :|  