Create musical pieces following the given structure and incorporating the suggested musical theme.
X:1
L:1/4
M:4/4
K:Eb
['B z']  
X:1
L:1/4
M:4/4
K:Eb
 B, | E F/A/ G F/E/ | G A B z | e2 d/c/ B | c B z B | e B/B/ c B/A/ | G A B z | A2 G/F/ E | F E z |]  