Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
M:2/2
K:G
['B2 A>B cB', 'g2 f>e ba g/b/a/g/']  
X:1
L:1/8
M:2/2
K:G
 G>F | E2 d>c B2 A>B | cB AG{G} F2 G>F | E2 e>f{efg} g2 f>e | d>ef>d B2 A>B | cB AG F2 G>A | 
 BG FE e>^d ef | g>e{g} f>d{f} e>c A/c/B/A/ | G2 F2 E4 :| B | e2 e>f g2 f>e | ba g/b/a/g/ e2 f>d | 
 e>B ef g2 f>e | ba g/b/a/g/ f2 A>B | cBAG F2 GA | BG F>E e>def | g>e{g} f>d{f} e>c A/c/B/A/ | 
 G2 F2 E4 :|  