Arranging Exercise: Sharp or Flat
Whenever you write notes that are not in the scale, you have to choose whether to use a sharp or a flat. In most instances only one of them is correct, if you take into account the harmonies. In this exercise, you will be choosing between these two.
The exercise is like this. Each time there are given two alternative notations of a short chord progression. Both versions sound the same. Point out the correct version, the left or right one: