Develop a musical piece incorporating the designated alphabet-based pattern and the supplied melodic theme.
X:1
L:1/8
M:3/28
K:D
['A d>dc Bcd A>AG FED G>GE FGA', 'd>dc Bcd A>AG FED G>GE FGA D3/2']  
X:1
L:1/8
M:3/28
K:D
 A |:"D" d>dc |"G" Bcd |"A7" A>AG |"D" FED |"A7" G>GE |"D" FGA |"A" C2 D |"A7" E2 A |"D" d>dc | 
"G" Bcd |"A7" A>AG |"D" FED |"A7" G>GE |"D" FGA |"A7" D3/2 z/ C |"D" D2"A7" A ::"D" d>ed |{e} dcd | 
"Em" e>fe |"A7"{f} ecA |"D" f>gf |"A" efd |"E7"{e} dcB |"A7" ABc |"D" d>dc |"G" Bcd |"A7" A>AG | 
"D" FED |"A7" G>GE |"D" FGA |"A7" D3/2 z/ C |1"D" D2"A7" A :|2"D" D3 ||  