Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
Q:1/4=120
M:4/4
K:C
['c2 d2', 'f2 f2']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:C
"^Slowly." c2 c2 d2 |{c} B3 c d2 | e2 e2 f2 | e3 d c2 | d2 c2 B2 | c2 cGAB | c2 c2 d2 | B3 c d2 | 
 e2 e2 f2 | e3 d c2 | d2 c2 B2 | c3{def} c3 |: g2 g2 g2 | g3 f e2 | f2 f2 f2 | f3 e d2 | e2 fedc | 
 e3 f g2 |({b} (3agf) e2 d2 |{d} c3{def} c3 :|  