Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
M:4/4
K:Gmin
['', 'c BF F/F/F Bcde fdg=e fdcB EGGB', 'dcce df f/f/f gfdf']  
X:1
L:1/8
M:4/4
K:Gmin
 c |: BF F/F/F Bcde | fdg=e fdcB | EGGB cBGB | dBGB eBGB | FB B/B/B cBAB | cFFd FFec | fBBg fdcB |1 
 GBAc B3 c :|2 GBAc B4 |: bggf cBBG | FBBc dcce | df f/f/f gfdf | gffc fcac | bggf cBBG | 
 FBBc dcce | df f/f/f gfdf |1 gfdc B3 f :|2 gfdc B3 ||  