Develop a tune according to the designated alphabetic musical pattern and the provided melody.
X:1
L:1/8
M:4/4
K:D
['A>GE>D (3(def)']  
X:1
L:1/8
M:4/4
K:D
 (3(DEF) |"G" G>FG>B"D7" A>GE>D |"G" G>Bd>g"C" e2"D7" (3(def) |"G" g>fg>d e>dB>G | 
"Am" A>BA>G E2 (3(DEF) |"G" G>FG>B A>GE>D |"G" G>Bd>g"C" e2"D7" (3(def) |"G" g>fg>d"Em" e>dB>G | 
"Am" A>G"D7"E>F"G" G2 :| (3(def) |"Em" g>fe>(g"D" f>e)d>f |"Em" e>de>f"Bm" e>dB>d | 
"G" g>fg>d"G/D" e>dB>G |"Am" A>BA>G"C" E2"D7" (3(DEF) |"G" G>FG>B"D7" A>GE>D | 
"G" G>Bd>g"C" e2"D7" (3(def) |"G" g>fg>d"Em" e>dB>G |"Am" A>G"D7"E>F"G" G2 :|  