Question: Is there a free online platform that can isolate specific audio elements from a song?

If you're looking for a free online tool to isolate specific audio elements from a song, Cryo Mix is a great option. This AI-powered music mixing and mastering platform includes an AI Audio Separator that uses machine learning technology to separate stems like vocals, drums and instruments out of a single audio file. It also includes a range of tools to improve audio quality, including pitch correction and final mix preparation, all through an intuitive interface.

Another good option is Fadr, which has a variety of AI-powered music tools, including a vocal remover and stem extraction for vocals, bass, drums and melodies. It also has a remix maker and a DJ controller, so it's good for a variety of music production tasks. Fadr has a free version, Fadr Basic, that includes core song separation technology and the ability to download MP3s, so it's good for beginners.

For a simple, web-based tool, Vocali.se lets you isolate vocals and music from any song or audio file without having to download any software or sign up for an account. The company uses machine learning to quickly and accurately separate vocals, so it's good for karaoke versions or isolating specific audio elements. It also has a collection of articles on audio and music that can be useful to musicians and music fans.

Although not entirely free, WavTool has a broad set of music production tools, including stem separation and audio-to-MIDI conversion. Its customizable interface and support for VST & AU plugins means it's good for musicians at any level. The Basic tier is free, with a range of tools to get you started on your music production journey.