Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
Q:1/4=120
M:2/2
K:C
['(gf) e>dcd', 'd2 (d/c/B/A/) G>AG>A B>cB>c d>ed>e f2 (ed)']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:C
"^March." G2 | c2 c>c c2 (ed) | c>GEG c2 (cd) | e2 e>e e2 (gf) | e>dcd e2 (ef) | g2 g>g g2 (ag) | 
 f2 f>f f2 (gf) | e>dcd egfe | d2 d>d d2 :: (d/c/B/A/) | G>AG>A B>cB>c | d>ed>e f2 (ed) | 
 c>dc>d e>fe>f | g>ag>a _b2 (ag) | a>f (de/f/) ge (cd/e/) | fedc cBAG | A>Bcd e2 (g/f/e/d/) | 
 c2 c>c c2 :|  