This is the free version. It includes: The DRUM SET NOTES Section on which you can click notes on the staff to see the corresponding part of the Drum Set and its name, or viceversa: you can click any part of the Drum Set to see the corresponding note on the staff. This section has exercises on which notes appear on the staff and you have to click the part of Drum Set corresponding to each particular note. LESSONS Section (Seventy lessons): These lessons show the way in which the Drum Set i