Jazz Session Practice

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Everyone
100+
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Everyone
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About this app

① It is possible to generate chord progressions based on about 30 types of parameters. It can be used for ``improvisation practice based on chords,'' ``composition support,'' or ``jazz lessons.''
In addition, the parameters you create and the resulting chord progression can be saved and reproduced at any time.

②You can generate new chord progressions by reharmonizing them based on the chord progressions of jazz standard numbers.
Based on a familiar song, you can check the effect of reharmonization, make changes to arrange the song, and use it for an improvisational approach.

③You can have sessions with bassists who have over 100 different characteristics (habits). In addition to the chords created in ① and ②, sessions can be performed using jazz standard numbers (more than 150 preset songs).
By playing with bassists with various quirks, you can get an opportunity to think about grooves, develop your ability to play while listening to surrounding sounds, and develop your ability to respond to ensembles.

④You can create bassists with various performance characteristics by specifying about 50 parameters, and then have a session with them. This allows you to better understand ``groove'' and ``swing,'' see how bass tones affect an ensemble, and explore bass note approaches.
Additionally, bassist parameters can be shared, so you can deepen your understanding not only with yourself but also with your friends.
Updated on
Jul 23, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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What’s new

 安定化、アンドロイドの上位バージョン(Android16)への対応
 ベーシストの個性が一部反映されなかった問題を修正
 音質を改善、演奏の拍ずれを解消
 ベースラインのストリーミング再生に対応
 英語対応(デフォルト言語を英語にし、デバイスが日本語のときのみ日本語になるようにしました)
Content rating
Everyone
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App support

About the developer
DS SOFT
ds.soft.1176106@gmail.com
229, SHIMOI, TONEMACHI KITASOMA-GUN, 茨城県 300-1633 Japan
+81 90-5198-7111

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