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
['z (G/e/) e2', 'z (G/d/)', '.F2 .F2']  
X:1
L:1/8
M:2/4
K:C
"C" cG/G/ .G2 | cG/G/ .G2 | cG ce |"G7" g2 z (G/e/) |:"C" e2 z (G/e/) | e2 z (G/c/) | ee (dc) | 
"G7" B2 z (G/d/) | d2 z (G/d/) | d2 z (G/d/) | .d.f (ed) |"C" c2 z (G/c/) |"Am" .e2 .c2 | A3 A | 
"G7" BB/B/ AB |"C" cd e z | .e2 .c2 |"G" G3 d |"D7" ed e^f |"G7" g2 z2 ::"C" .e2 .e2 | e2 dc | 
"G7" (cB) .B.B | B2 B/c/d/e/ | .f2 .f2 | f2 ed |"C" (dc) .c.c | c2 z2 | .e2 .e2 | c2 (de) | 
"F" (gf) .f.f | f2 z2 |"C/G" e2 (de) |"G7" f3 B |"C" cc/c/ cc | c2 z2 :|[K:F]"F" .F2 .F2 | 
 .F2 .F2 |:"F" A3 c | (cf f)A |"Bb" G3 d | d2 z2 |"C7" E3 G | (Ge e)d |"F" c3 F | A2 z2 | F3 A | 
 (Ac gf) |"Bb" e3 d | .d2 .d2 |"C7" d3 c | =Bc de |"F" .f2 f>f | f2 z2 :|  