Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/16
M:2/4
K:G
['g2GB d2ed B2D2 G2B2', 'A2(BA) FAde f2df a2fa gfed cdec']  
X:1
L:1/16
M:2/4
K:G
|:"G" g2GB d2ed | B2D2 G2B2 |"D7" ABcA FDFA |"G" GFGB d2(ef) | g2GB d2ed | B2D2 G2B2 | 
"D7" (AB)cA (FD)EF |1"G" G4 z4 :|2"G" G4 z2 |]: (AB) |"Am" c2B2 A2G2 |"D7" F2A2 D2EF | 
"G" (GF)GB"D7" d2ef |"G" g2(GB)"D7" (dB).c.A |"Am" c2B2 A2G2 |"D7" F2A2 D2EF |"G" (GF)GB"D7" A2F2 | 
"G" G4 z2 :: (3(edc) |"G" B2d2"D7" A2c2 |"Am" (cB).A.B"G" G2AG |"D7" FGAB cDFA | 
"G" (GF).G.B"D7" d2gd |"G" B2d2"D7" A2d2 |"Am" (cB)AB"G" G2BG |"D7" FGAB cDFA |"G" G4 z2 :: 
[K:D] A2 |"D" A2(BA) FAde | f2df a2fa |"A7" gfed cdec |"D" (dc)df"A7" A2FG |"D" A2(BA) FAde | 
 f2df a2fa |"A7" gfed cdec |"D" d4 z2 ::[K:G] (3(edc) |"G" B2d2"D7" A2c2 |"Am" (cB).A.B"G" G2AG | 
"D7" FGAB cDFA |"G" (GF).G.B"D7" d2gd |"G" B2d2"D7" A2d2 |"Am" (cB)AB"G" G2BG |"D7" FGAB cDFA | 
"G" G4 z2 :|  