Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/4
M:4/4
K:Eb
['c d e d c (B/c/)']  
X:1
L:1/4
M:4/4
K:Eb
 C | C G F G | E3/2 D/ C z/ G/ | c d e d | c (B/c/) G G | c d e d | c (B/c/) G3/2 F/ | 
 E F G3/2 E/ | C C C |]  