The Chainsmokers - 5.1 Dolby Atmos Rips (Apple Music) - Free Audiobook

Dolby Atmos rips of various The Chainsmokers albums and songs from Apple Music, including No Hard Feelings, Summertime Friends, and So Far So Good.

These files normally has 5.1 channels in total, but can be expanded to 9.1.6 using special software. Some instruments can be isolated in these extra channels. Note however that there are only 6 channels of actual audio, and the extra channels are just estimated from it so it may not be completely clean.

You can use Cavernize to extract them with the "9.1.6 with top sides" option (use PCM output):

https://cavern.sbence.hu/cavern/downloads.php

Then use Audacity to load the output and export individual channels (make sure to install the FFmpeg library):

https://www.audacityteam.org/

The 5.1 channel layout might be preferrable for isolating vocals with AI, so just load the file directly into Audacity without running it on Cavernize.