On Level 1, you get triads. As you start moving up the levels, you progress into jazz harmony, and your choice for the range of jazz piano voicings will increase. More specifically, on Level 2, you get what is written on the chart. On the 3rd level, you move into Jazz harmony and get piano voicings. On the 4th level, some basic substitutions are being introduced, and on the 5th, you will get more advanced substitutions and reharmonizations.