Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:G
['G2 (3BAG d>GB>d g2 f>g e>gd>B c>Ae>c', 'g>GB>g f>Ac>e e>d (3BAG A>D (3FED G>B', 'G>AB>d g2- g>b g>dB>d c>BA>G F>Ad>c B>Gg>f']  
X:1
L:1/8
M:4/4
K:G
|: G2 (3BAG d>GB>d | g2 f>g e>gd>B | c>Ae>c (3Bcd G>B | A>DF>A d>Bc>A | G2 (3BAG d>GB>d | 
 g2 f>g e>gd>B | c>Ae>c (3Bcd G>B | A>DF>A G3 z :: g>GB>g f>Ac>e | e>d (3BAG A>D (3FED | 
 G>B (3BBB c>ea>g | (3fga e>a ^c>de>f | g>GB>g f>Ac>e | e>d (3BAG A>D (3FED | G>B (3BBB c>ea>g | 
 (3fed (3cBA G>AB>d :: g2- g>b g>dB>d | c>BA>G F>Ad>c | B>Gg>f e>^ca>g | (3fga e>a ^c>de>f | 
 g>GB>g f>Ac>e | e>d (3BAG A>D (3FED | G>B (3BBB c>ea>g |1 (3fed (3cBA G>AB>d :|2 
 f/e/dc/B/A G3 z ||  