This app functions as a MIDI player designed for personal choral practice. It allows users to isolate individual parts, adjust volume and panning, and change playback speed for tailored practice sessions. Standard MIDI files can be played, with additional song data available for purchase.
1.71
June 17, 2026
Supports the latest libraries and improves the responsiveness of the player screen startup.
Free
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ご連絡ありがとうございます。 support@nokkeusi.comからメールにて回答させていただいたのですがおそらく届いていないものと思います。連絡がつかず心配しておりました。 第九の音源についてご指摘いただいたことありがとうございます。既に修正も済んでおります。 追記) バージョン1.62より、音源データのアップデートが容易にできるようになりました。 よろしくおねがいします。
Chorus Lesson is a MIDI player specifically designed for personal choral practice. It helps users isolate individual vocal parts, adjust their settings, and practice at their own tempo.
You can play standard MIDI files with Chorus Lesson. However, files with a very large number of parts, such as those with more than five to six SATB parts plus accompaniment, may not play optimally. Format type 1 MIDI files are recommended.
Chorus Lesson allows you to mute or solo specific parts, adjust their volume and panning, and change the playback speed. This enables you to focus on your individual part while hearing the context of the other voices.
Chorus Lesson does not contain advertisements. Its monetization comes from the option to purchase additional song data within the app.
Chorus Lesson is available for iPhone and iPod. It was last updated on June 17, 2026, indicating ongoing support.
Chorus Lesson is available for a one-time purchase of $2.99. Additional song data can be bought within the app.
You can purchase and download additional song data directly within the app through the Song Data Shop. The selection of songs is currently small but will be gradually expanded.
Chorus Lesson has an age rating of 4+, making it suitable for a wide range of users interested in music practice.
