Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
Q:1/4=112
M:4/4
K:Eb
['(BG) F>G', 'ef g>f eg']  
X:1
L:1/8
Q:1/4=112
M:4/4
K:Eb
"^Allegretto" E>G | B2 (Bc) (BG) F>G | B>c ee{def} e3 c | (BG) (ec) (BG) F>G | (EDEF) G2 e>d | 
 c>d BG FA GF | (E>DE)F g2 (ed) | c2{c} (BG) B2 (GE) | (TF4 E2) || E>G | (Be) (ce) (BG) F>G | 
 E2 E2 E2 (EG) | (B>c B)G (Bc) ef | g>f eg f2 ef | g>f eg fe ce | (cB) (eG) B2 e>d | c2 BG B2 GE | 
 TF4 E2 ||  