Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
Q:3/8=60
M:3/8
K:C
['CEG ceg', 'c3 G ceg gec g2 e/c/ ecG', 'g>ag/f/ e>fe/d/', 'e3 fdd e/d/e/f/g/e/ fdd f/d/c/d/e/f/ g>af/e/ e>fe/d/']  
X:1
L:1/8
Q:3/8=60
M:3/8
K:C
 CEG | ceg | fdB | c/B/c/d/e | CEG | ceg | fdB | c3 :: G | ceg | gec | g2 e/c/ | ecG | CEGceg | 
 fdB | c3 :: g>ag/f/ | e>fe/d/ | ccd | e>fe | g>ag/f/ | e>fe/d/ | ccd | e3 :: fdd | e/d/e/f/g/e/ | 
 fdd | f/d/c/d/e/f/ | g>af/e/ | e>fe/d/ | cc/e/d/B/ | c3 :|  