Find easy, free and powerful music editor is not so simple. Take a look on AudioMass.

This is autotranslated version of this post.

AudioMass will help you to record audio or to edit the current track using high-grade tools cut, copy, effects, distortion and more.

At first glance, the service looks very simple. However, it's almost a professional tool to work with audio. It supports hotkeys, so you can easily manage all the tools of the edit.

To try

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