Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
M:2/4
K:G
['d>c BA BG ED', 'Bd ef g2 gd ed BA']  
X:1
L:1/8
M:2/4
K:G
 d>c BA | BG ED | DG BG | dB A2 | d>c BA | BG ED | DF A>B | AG G2 :| Bd ef | g2 gd | ed BA | 
 BG ED | Bd ef | g2 gd | ed BA | Be e2 | Bd ef | g2 gd | ed BA | BG ED | d>c BA | BG ED | DF A>B | 
 AG G2 ||  