Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/4
M:3/4
K:C
['f2 e2 g c d e d2', 'c e d c d2 B g3/2']  
X:1
L:1/4
M:3/4
K:C
|: g"^+" f2 | e2 g | c d e |"^+" d2 d | g c'2 | a2 g | a e ^f | g3 :: d3/2 e/ f |"^+" e3/2 d/ c | 
 e d c | d2 B | g3/2 f/ e | a3/2 b/ g | c'"^+" d3/2 c/ | c3 :|  