Develop tunes following the predetermined chord changes.
'D', 'C', 'A', 'D', 'G', 'Em', 'Bm', 'F#m', 'A', 'Em', 'D', 'G', 'A', 'D', 'D', 'A', 'D', 'A', 'D', 'A', 'C', 'A', 'D', 'G', 'Em', 'Bm', 'F#m', 'A', 'Em', 'D', 'G', 'A', 'D'  
X:1
L:1/8
M:4/4
K:D
 fe |"D" dcAG FGAB |"C" cABG"A" A2 fe |"D" d2 cA"G" BGAF |"Em" GBAF"Bm" DEFG |"F#m" ABAF"A" GFEF | 
"Em" D2 DE"D" F2"G" G2 |"A" A2 d2 cdef |"D" d2 dc d2 :: de |"D" f2 ef gfef | dcAG"A" A2 de | 
"D" f2 ef"A" gfef |"D" d3 c A2 fg |"A" agfa gfef | dcde f2 ec | dcAG FGAB |"C" cABG"A" A2 fe | 
"D" d2 cA"G" BGAF |"Em" GBAF"Bm" DEFG |"F#m" ABAF"A" GFEF |"Em" D2 DE"D" F2"G" G2 |"A" A2 d2 cdef | 
"D" d2 dd d2 :|  