Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
M:2/4
K:C
['dfAc BA/B/ G2 GBeg fe/f/ d2 ff/a/', 'd2 e2 d/c/B/A/ ee cA a2 gfed']  
X:1
L:1/8
M:2/4
K:C
 dfAc | BA/B/ G2 | GBeg | fe/f/ d2 | ff/a/ gg | ee/g/ ff | dd/f/ ee | cc d2 :| e2 d/c/B/A/ | 
 ee cA | a2 gfed | aa fd | ff/a/ gg | ee/g/ ff | dd/f/ ee | cc d2 :|  