One describes an electronic device for the production, playing, accompaniment and evaluation of sounds, comprising means do be associated to audio system and, the device comprising a) a processing unit which (i) produces musical instrument sounds from an user's touches; (ii) plays music sounds, adds musical effects, alters reproduction parameters of the music playing; (iii) mixes sounds produced from the user's touches with music sounds played; and (iv) comprises music parameters able to evaluate an instrumental accompaniment performance resulted from the instrumental music sounds produced by the user's touches; b) the processing unit comprising a touch sensitive surface which comprises: (i) touch sensors arranged under said surface providing regions sensitive to touches; and (ii) Leds distributed under said surface and controlled by a microprocessor providing a luminous indication sequence according to the music sounds played, said luminous indication sequence being following by touches of the user in this surface.