Develop tunes following the predetermined chord changes.
'D', 'G', 'Em', 'D', 'G', 'D', 'D', 'G', 'Em', 'D', 'G', 'D', 'D', 'Bm', 'D', 'A7', 'D', 'D', 'Bm', 'D', 'A7', 'D', 'D', 'A7', 'D', 'A7', 'D', 'D', 'A7', 'D', 'A7', 'D', 'D', 'Em', 'D', 'A7', 'D', 'D', 'Em', 'D', 'A7', 'D'  
X:1
L:1/8
Q:1/8=164
M:4/4
K:D
"D" dBAF DEFD |"G" GFGA"Em" BE E2 |"D" dBAF DFAD |"G" GBAG"D" FD D2 |"D" dBAF DFAD | 
"G" GFGA"Em" BE E2 |"D" d2 cd (3Bcd AF |"G" GBAG"D" FD D2 ||"D" dcde fgfe | dcde"Bm" fB B2 | 
"D" dcde f2 bf |"A7" afeg"D" fABc |"D" dcde fgfe | dcde"Bm" fB B2 |"D" bf f2 afdB | 
"A7" ABde"D" fdeB ||"D" Adfd adfd | Adfd"A7" cdec |"D" Adfd adfd |"A7" (3fga eg"D" fd d2 | 
"D" Adfd adfd | Adfd"A7" cdeg |"D" fgfe dBAF |"A7" ABde"D" fd d2 ||"D" (3Bcd Ad BdAd | 
 B2 Ad"Em" BE E2 |"D" (3Bcd Ad BAFB |"A7" ABde"D" fd d2 |"D" (3Bcd Ad BdAd | B2 Ad"Em" BE E2 | 
"D" BAFB AFEF |"A7" ABde"D" fd d2 |]  