Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/4
M:6/4
K:G
['E2 F G2 A B3/2', '=f2 e d B2 d3']  
X:1
L:1/4
M:6/4
K:G
 E2 F G2 A | B3/2 A/ B d3 | A2 B d2 B | A3/2 F/ E D3 | E2 F G2 A | B3/2 c/ d e =f e | 
 d/(B/ B2) d/B/A/F/ G | E6 :| d2 e =f2 e | d B2 d3 | A2 B d2 B | A3/2 F/ E D3 | d2 e =f2 e | 
 d B2 d3 | B2 A B3/2 d/ e | d6 | e3 =f2 e | d B2 d3 | A2 B d2 B | A3/2 F/ E D3 | E2 F G2 A | 
 B3/2 c/ d e =f e | d/(B/ B2) d/B/A/F/ G | E6 ||  