Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
M:6/8
K:Emin
['B,EG FEF', 'BGE FEF B,EG']  
X:1
L:1/8
M:6/8
K:Emin
 B,EG FEF | B,EG FEF | BEG FED | ADF E2 D | B,EG FEF | BEG FED | B,DB DFd | FBf Bdb :| c'ba ecB | 
 ABc cBA | BGE FEF | B,EG FEF | CEG FEG | cEG FED | B,^CD CDE | DFA FAB | cBA ECB, | A,B,C CB,A, | 
 BGE FEF | B,EG FEG | c3 c2 d | d3 d3 | d2 c2 B2 | G3 F3 ||  