| 摘要 |
A keyboard musical instrument of the present invention includes a musical instrument case which is substantially in a box shape and whose front side is open upward, a keyboard section which is arranged in the musical instrument case and exposed to the upper front side of the musical instrument case, a keyboard lid which has a front lid and a rear lid that are foldable and coupled together and openably and closably covers the upper side of the keyboard section, a lid guide section which guides the keyboard lid to be folded and placed near the rear portion of the keyboard section when guiding the keyboard lid to expose the keyboard section upward, a loudspeaker which is arranged in the musical instrument case and positioned behind the keyboard section, and second sound emission holes provided in the upper portion of the musical instrument case.
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