Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/4
K:C
["c>eg>e f>ac'>a", "(g/a/4b/4) c'>ab>g a>fg>e"]  
X:1
L:1/8
M:2/4
K:C
|: c>eg>e | f>ac'>a | g>e (f/e/d/c/) | B>cd>e | c>eg>e | f>ac'>a | g>ed>e | c3 :| (g/a/4b/4) | 
 c'>ab>g | a>fg>e | f>d{f} ed/c/ | B>cd (g/a/4b/4) | c'>ab>g | a>fg>e | G>cB>d | c2- cg | 
 (3c'ac' (3bgb | (3afa (3geg | (3fdf (3edc | B>cd>e | c>ed>f | e>gf>a | g>ed>e | c2 z2 |]  