Compose a piece of music following the specified structure and theme.
X:1
L:1/4
M:4/4
K:Eb
['e g2 f d B2 B c3/2']  
X:1
L:1/4
M:4/4
K:Eb
 e g2 f | d B2 B | c3/2 c/ f e | c2 z c | e g2 f | d B2 B | c3/2 c/ f e | c2 z c | B B B3/2 B/ | 
 c e2 G | F E e3/2 c/ | B G F F/F/ | G3/2 B/G/ F3/2 | E4 |]  