Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
Q:1/4=80
M:2/4
K:C
['(B{cB}A) (B<e)', 'A>B (c<d) e>^f (g<e) a>g (f<d)']  
X:1
L:1/8
Q:1/4=80
M:2/4
K:C
"_vb" (e/d/) | c>c (B{cB}A) | (B<e) d>B | A>A (B<c) | d>B (G3/2A/4B/4) | (.c>.c) (B{cB}A) | 
 (B<e) (3(dBA) | (.B>.B) (.A>.A) | A3 :| E | A>B (c<d) | e>^f (g<e) | a>g (f<d) | e>c A7/4E/4 | 
 A>B (c<d) | e>^f (g<e) | a>g (f<d) | e2 (3(e^f^g) | a>g (^f<a) | g>f (e<d) | c>A B>c | 
 d>B (G3/2A/4B/4) | (.c>.c) (B{cB}A) | (B<e) (3(dBA) | (.B>.B) (.A>.A) | A3 |]  