Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/8
M:2/4
K:Ador
['Bc/B/ AB/A/ GE EG', 'e2 e>d ef gd Bg dB']  
X:1
L:1/8
M:2/4
K:Ador
|: Bc/B/ AB/A/ | GE EG | Bc/B/ AB | d2 ed | Bc/B/ AB/A/ | GE EG | A/B/A/G/ AG | EF GA :: e2 e>d | 
 ef gd | Bg dB | A2 A/B/c/d/ | e2 e>d | ef gd | Bg dB |1 A2 ag/f/ :|2 A2 A2 ||  