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
['(3cBc B>dG>B (3ABc F>A G>BD>C B,>DG>F E>Gc>B', 'G2 B>c (3ded (3Bcd b>gd>B (3cdc (3ABc']  
X:1
L:1/8
M:4/4
K:G
|: (3cBc | B>dG>B (3ABc F>A | G>BD>C B,>DG>F | E>Gc>B (3ABc f>g | (3agf g>e (3fed (3cBA | 
 (3Bcd G>d c>A (3FGA | G>DB,>D G>BD>G | E>c (3cBc D>A (3FGA | G2 (3B^AB G2 :: B>c | 
 (3ded (3Bcd b>gd>B | (3cdc (3ABc a>gf>e | (3ded B>d (3cdc A>c | (3BdB (3GB/c/d c>D (3FGA | 
 (3Bcd (3Bcd c>AF>A | G>DB,>D G>BD>G | E>C (3A,B,C D>AF>A | G2 D2 G,2 :|  