A stand for holding a microphone, music, or instrument having a horizontally adjustable base comprised of a plurality of adjustable telescoping members forming a U-shape support, such that the members of the base can be adjusted to avoid other equipment in a crowded stage area, thereby conserving space and enabling the stand to be conveniently situated closely together with such other equipment. A fungal inoculum and the liquid aggregate are inserted into a mold cavity. A text generating unit 31 generates spoken text for synthetic speech by using text as a word sequence included in action command information in accordance with the action command information.