A generation apparatus and the like for generating a test vector set capable of reducing differences in a logic value generated before and after a scan capture for outputs from scan cells included in a full-scan sequential circuit are provided. The present invention provides an electrolyte solution including: a nitrile compound; and a quaternary ammonium salt, the electrolyte solution having a potassium ion content of less than 10 ppm, a moisture content of 20 ppm or less, a tertiary amine content of 30 ppm or less, a heterocyclic compound content of 30 ppm or less, and an ammonia content of 20 ppm or less. When the first electronic musical apparatus requests the apparatuses belonging to the second user to execute a music session and an additional function, the first and second electronic musical apparatuses are instructed to execute the music session, and the first and second PCs are instructed to execute the additional function. The oil phase has a viscosity in the range of 20 to 8,000 mPas at 25 C.