Abstract: The electronic musical instrument provides an internal memory for storing performance data corresponding to a musical performance played by using a keyboard thereof and an external memory which can be freely attached to and detached from the main body thereof. The performance data stored in the internal memory can be normally transferred to and stored in the external memory. However, in the case where data quantity of the performance data stored in the internal memory is larger than a storage capacity of the external memory, the performance data stored in the internal memory are controlled to be inhibited from being transferred to the external memory. In this case, an alarm may be generated in order to inform a player of data quantity of the performance data to be overflowed from the external memory when such performance data are to be stored in the external memory.

Abstract: There is provided a selection switch for selecting musical information determining characteristics of a tone such as a tone color. This selection switch is pre-assigned with first musical information. Switches and circuits are provided for assigning second musical information to the selection switch. This second musical information is one selected as desired from among plural musical information. Thus, at least two musical information of the pre-assigned first musical information and the selectively assigned second musical information are assigned to the selection switch. There is also provided a mode selection switch. When a first mode has been selected by this mode selection switch, a characteristic of a tone to be produced is determined by the first musical information. When the second mode has been selected, a characteristic of a tone to be produced is determined by the second musical information.

Abstract: An automatic musical accompaniment playing system for use in an electronic musical instrument with an auto rhythm system changes a tone color of accompaniment tones when the state of operation of the auto rhythm system is changed. The automatic accompaniment playing system comprises a tempo clock generator for generating tempo clock pulses having a frequency proportional to a tempo of a rhythm to be generated and a register for storing a flag indicative of a state of operation of the auto rhythm system. The tempo clock pulses are counted by a tempo counter when the auto rhythm system is in operation, and the state of operation of the auto rhythm system is detected in accordance with the state of the flag. A memory stores two groups of tone color data, one of which is selected when the auto rhythm system is in operation, and the other of which is selected when the auto rhythm system is not in operation.

Abstract: Disclosed herein are the novel 6-substituted naphthalene-2-carboxylic acids represented by the formula (I): ##STR1## wherein X represents a hydroperoxy group or a hydroxy group, and a process for producing the 6-substituted naphthalene-2-carboxylic acid represented by the formula (I) by reacting 6-isopropylnaphthalene-2-carboxylic acid with molecular oxygen under heating in the presence of a salt of persulfuric acid as a catalyst in an aqueous alkaline solution.

Abstract: Disclosed herein are methyl 2-(2-hydroperoxy-2-propyl)naphthalene-6-carboxylate represented by the formula (I): ##STR1## and a process for producing the compound represented by the formula (I) at a high purity and in a high yield.

Abstract: A novel compound of 2-[para-(2-substituted or unsubstituted-3,3,3-trifluoropropyl)phenyl]propionic acid or a salt thereof which has a specific pharmacological activity and a pharmaceutical composition comprising the novel compound as an active ingredient are disclosed.

Abstract: Disclosed is a method for producing trans-4-aminomethyl cyclohexane-1-carboxylic acid by heating and isomerizing cis-4-aminoethyl cyclohexane-1-carboxylic acid hydrochloride or a mixture of cis-4-aminomethyl cyclohexane-1-carboxylic acid hydrochloride with trans-4-aminomethyl cyclohexane-1-carboxylic acid hydrochloride in an atmosphere of hydrogen chloride gas and in the absence of a solvent.