The ‘Mix’ feature lets Premium users create automatic or customized track transitions.

Select Premium users are now able to access a beta that allows you to experiment with mixing tools for transitions between tracks.

This is the latest feature from Spotify that gives users more control over their listening habits. Over the past few months, Spotify has launched the ability to customize genres for their Discover Weekly playlists, and customize their queues with shuffle and sleep timer options. Spotify's AI-powered DJ also now takes song requests.