Basically it is possible to play our exercises and pieces with any keyboard instrument. A piano or digital piano/keyboard/e-piano with 88 keys (complete keyboard) and two pedals would be ideal. If you have a keyboard with fewer keys (e.g. 61 keys) and/or no pedals, you can still play most of the content. For some pieces, the distances may be greater than for your instrument at home. Nevertheless, the pieces may be replayed (with restrictions).