Create musical pieces following the given structure and incorporating the suggested musical theme.
X:1
L:1/8
M:3/4
K:Bb
['de fB', 'ga bd fb ag fA ce dc'  
X:1
L:1/8
M:3/4
K:Bb
 de |:"Bb" fB df ga | bd fb ag |"F7" fA ce dc |"Bb" BA Bc de | fB df ga | bd fb ag | 
"F7" fA ce dc |1"Bb" B2 z2 de :|2"Bb" B2 z2 z2 |:[K:F]"C7" c2 EG cE |"F" FA ca gf |"C7" ef ^fg ag | 
"F" fe dc BA |"C7" c2 EG cE |"F" FA ca gf |"C7" ef ^fg ag |"F" f2 z2 z2 :|  