Develop harmonies in accordance with the predetermined musical layout.
'Compound Binary'  
X:1
L:1/8
M:2/2
K:D
"A" |:"D" ABde fd (f2 |"A" e<)ece Aece |"D" ABde fdfa |"A7" gecA"D" d2 d2 :|"B" |:"D" fgfe fgaf | 
"A" gfec efge |"D" fgfe fgaf |"A7" gecA"D" d2 d2 :|  