Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
Q:3/8=90
M:6/8
K:G
['', 'e2 c dBG', 'efg gfe']  
X:1
L:1/8
Q:3/8=90
M:6/8
K:G
 d |: e2 c dBG | B2 G GBd | e2 c dBG | c2 A ABd | e2 c dBG | B2 G GAB | cac BgB | A2 a ABd :: 
 efg gfe | dgG GBd | efg gfe | a2 A ABc |{ef} g2 g gfe | gfe dcB | cac BgB | A2 a ABd :|  