Drum, String and wind instruments have been around for thousands of years. They have been modified to make more/crazier sounds, but the basic concepts are still there. Purely electric music has been around since the first processor was able to deal with the math necessary to send signals to speakers... so... While the sound might be different, there may be more or less synthesis, and the look of the instruments may change (# of strings, holes, hands needed to play?) The basics will always be there.