Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/4
M:6/4
K:Cmin
['c G e d g f c', 'g c']  
X:1
L:1/4
M:6/4
K:Cmin
 E/F/ | G/F/E/D/ D G E c | G e d g f c | G e d g f c | c3/2 d/f/e/ d/c/ g G | F E D G C :: G | 
 c3/2 d/f/e/ d/c/ g c | d b B d f d | c3/2 d/c/d/ e/c/ g c | G c- c G E C | c3/2 d/f/e/ d/c/ g c | 
 d b B d f d | c/d/e/c/ d f e g | F E D G C |]  