---
title: "第2課 · 3つの呼び方：指番号・音名・階名 · Piakno"
description: "どの白鍵を見てもすぐに音名が言え、対応する階名を歌えること"
url: "https://piakno.com/ja/course/piano-foundations/lesson/2"
lang: "ja"
alternates:
  en: "https://piakno.com/course/piano-foundations/lesson/2.md"
  zh-Hans: "https://piakno.com/zh-Hans/course/piano-foundations/lesson/2.md"
  zh-Hant: "https://piakno.com/zh-Hant/course/piano-foundations/lesson/2.md"
  ja: "https://piakno.com/ja/course/piano-foundations/lesson/2.md"
  ko: "https://piakno.com/ko/course/piano-foundations/lesson/2.md"
  es: "https://piakno.com/es/course/piano-foundations/lesson/2.md"
  de: "https://piakno.com/de/course/piano-foundations/lesson/2.md"
  pt-BR: "https://piakno.com/pt-BR/course/piano-foundations/lesson/2.md"
---

# 3つの呼び方：指番号・音名・階名

> どの白鍵を見てもすぐに音名が言え、対応する階名を歌えること

- [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 · 姿勢：1時間弾き続けられる体づくり](https://piakno.com/ja/course/piano-foundations/lesson/1)
- [次のレッスン · 拍と音価：音楽の鼓動](https://piakno.com/ja/course/piano-foundations/lesson/3)