Our startup helps students learn Indian Classical Music with a modern approach by offering tools such as a composition editor, music transcriber, and real-time pitch/beat accuracy feedback provider right in the web browser. We love Scala and use it for backend and frontend development. However, it took quite an effort to keep the code simple, make development a joyful experience, and extract high performance. In this talk, we will explore the choices we made (and moved away from): frontend fram…