Abstract: An electronic musical instrument has a keyboard, a key depression speed detector and a glide pattern generator. When any key of the keyboard is depressed, the key depression speed detector detects the speed of depressing the key and produces a signal representing this speed. In accordance with this signal the glide pattern generator changes a reference glide pattern to a new pattern. The instrument generates a musical tone having the glide effect determined by the new glide pattern.

Abstract: A frequency divider for a tone source for an Arabian scale in an electronic organ of the type wherein musical tone signals for a standard musical scale, musical tone signals higher than the same by 50 cents and musical tone signals lower than the same by 50 cents can be obtained from the output signal of a main oscillator. The output signal of the main oscillator is frequency-divided by at least one frequency divider to obtain an output signal. The aforesaid frequency divider comprises a counter and an AND circuit. An input terminal of the frequency divider is connected through the counter to an input terminal on one side of the AND circuit and is connected directly to an input terminal on the other side of the AND circuit.