---
title: "第18課 · 二つの音部記号の基準音：G4とF3 · Piakno"
description: "ト音記号とヘ音記号がそれぞれ固定している音を言えるようにする"
url: "https://piakno.com/ja/course/piano-foundations/lesson/18"
lang: "ja"
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  zh-Hans: "https://piakno.com/zh-Hans/course/piano-foundations/lesson/18.md"
  zh-Hant: "https://piakno.com/zh-Hant/course/piano-foundations/lesson/18.md"
  ja: "https://piakno.com/ja/course/piano-foundations/lesson/18.md"
  ko: "https://piakno.com/ko/course/piano-foundations/lesson/18.md"
  es: "https://piakno.com/es/course/piano-foundations/lesson/18.md"
  de: "https://piakno.com/de/course/piano-foundations/lesson/18.md"
  pt-BR: "https://piakno.com/pt-BR/course/piano-foundations/lesson/18.md"
---

# 二つの音部記号の基準音：G4とF3

> ト音記号とヘ音記号がそれぞれ固定している音を言えるようにする

- [はじめてのピアノ楽典 本科コース](https://piakno.com/ja/course/piano-foundations)
- [前のレッスン · オクターブ記号 8va](https://piakno.com/ja/course/piano-foundations/lesson/17)
- [次のレッスン · 両手5指ポジションの10の鍵盤](https://piakno.com/ja/course/piano-foundations/lesson/19)