Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
M:4/4
K:G
['B>c d>GB>G E>G^D>G D6 B>c d2 B>G', 'F>G A2', 'G6 B>c d>gB>d G>Bd>B c>eA>c E>cA>G F>Af>e']  
X:1
L:1/8
M:4/4
K:G
|: B>c | d>GB>G E>G^D>G | D6 B>c | d2 B>G E2 F>G | A6 B>F | A>GE>G D2 F>G | A2 B2 c2 ^c2 | 
 d>ed>B A>GE>F | G6 :: B>c | d6 c>B | E6 F>G | A2 ^G>A d>AG>A | B6 B>F | A>GE>G D2 F>G | 
 A2 B2 c2 ^c2 | d2 d>B A>GE>F | G6 :: B>c | d>gB>d G>Bd>B | c>eA>c E>cA>G | F>Af>e d2 c>A | 
 G2 B>E D2 B>c | d2 B>d G2 d>B | c2 A>c E2 A>G | F>Af>e d>cE>F | G2 B2 G2 :|  