Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/8
M:4/4
K:G
['G2 d2 c>BA>G', 'G2 (3def g>G (3Bcd g>fe>d c>eg>e ^c>eg>e']  
X:1
L:1/8
M:4/4
K:G
|: (3DEF | G2 d2 c>BA>G | c>Bc>d (3cdc (3cBA | G2 d2 c>BA>G | d>^cd>e d>=cB>A | G2 d2 c>BA>G | 
 c>B (3Bcd e>f (3gfe | d>BG>B (3cBA F>A | G2 G2 G2 :: (3def | g>G (3Bcd g>fe>d | c>eg>e ^c>eg>e | 
 a>A (3^cde a>g (3gfe | d>fa>f d>f (3agf | g>GB>d g>fe>d | e>EG>c e>g (3gfe | d>gf>e (3ded (3cBA | 
 G2 B2 G2 :|  