Compose a piece adhering to the given musical structure and theme.
X:1
L:1/4
M:3/4
K:Eb
['c e3/2']  
X:1
L:1/4
M:3/4
K:Eb
 c e3/2 d/ | c G G | c e d | c3 | B d3/2 c/ | B F F | B d c | B3 | c e3/2 f/ | g e f | g e c | 
 =B3 | g2 f | e c3/2 c/ | B G F | G c d | c3 |]  