Abstract: A control device in one embodiment includes a first transmission unit, a first receiving unit, and a first generation unit. The first transmission unit is configured to transmit first performance data including contents of playing a keyboard instrument at a first communication base to a second communication base. The first receiving unit is configured to receive second performance data from the second communication base. The first generation unit is configured to generate a drive signal to produce a sound in accordance with the second performance data and output the drive signal to a sound generation device at the first communication base. At least one of the first performance data and the second performance data includes a key position signal indicating a key press amount on the keyboard instrument.

Abstract: In a rubber blend consisting of:a polybutadiene blend (A)+(B) composed of:(A) not less than 30% by weight but less than 70% by weight of a high molecular weight polybutadiene comprising as the main component a polybutadiene having an intrinsic viscosity [.eta.] of 3.0 to 7.0 as measured in toluene at 30.degree. C. and a cis-1,4-configuration content of at least 80% and(B) more than 30% by weight but not more than 70% by weight of a low molecular weight polybutadiene comprising, as the main component, a polybutadiene having an intrinsic viscosity [.eta.] of 0.1 to 0.5 as measured in toluene at 30.degree. C., and(C) a diene type rubber other than the above components (A) and (B),the rubber blend (A)+(B) is contained in a proportion of 35 to 95 percent by total weight of rubber blend (A)+(B)+(C), thereby providing a rubber blend suitable for a tire; said blend being greatly improved in wet skid performance and ice skid performance with retention of the abrasion resistance of a conventional polybutadiene.