I got this in my email from Twitch:

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We are committed to being more transparent with you about DMCA. We recently received a batch of DMCA takedown notifications with about 1,000 individual claims from music publishers. All of the claims are for VODs, and the vast majority target streamers listening to background music while playing video games or IRL streaming. Based on the number of claims, we believe these rights holders used automated tools to scan and identify copyrighted music in creators’ VODs and Clips, which means that they will likely send further notices. We are actively speaking with music labels about solutions that could work for creators as well as rights holders. This is our first such contact from the music publishing industry (there can be several owners for a single piece of music), and we are disappointed they decided to send takedowns when we are willing and ready to speak to them about solutions.

Protecting Your Channel

While the vast majority of you don’t include unauthorized background music in your livestreams, this recent batch suggests that some of you still do. The only way to protect yourself from DMCA notifications is to not stream music - or other copyrighted material - you do not have rights to. If you know you have unauthorized music or other copyrighted material in your past VODs or Clips, we strongly recommend that you permanently delete anything that contains that material. For your remaining VODs, we recommend you use the “unpublish all” feature and review any content for unauthorized music or other copyrighted material. If you believe your content has been misidentified or taken down by mistake, you can submit a counter-notification (see our DMCA Guidelines for requirements) or request a retraction from the copyright owner directly. For more information about what you can do to protect your channel please reference these resources including Creator Camp sessions, Help Articles and FAQs, and an overview blog post to supplement our Terms of Service, Community Guidelines, and separate Music Guidelines.

What Twitch is Doing

For our part, we are continuing to help creators minimize the amount of material that may infringe others’ copyrights. That includes educating creators and providing resources to understand the rules and risks concerning the use of music on Twitch as well as building new product features (such as the ability to unpublish VODs, view your strike count, strike notifications in the Creator Dashboard, multi-track audio support for OBS and more), investing in proactive detection and muting, and working with rights holders on longer-term solutions.

We know you may have questions about our conversations with music rights holders. These conversations are active and ongoing, and we continue to work with them to establish potential approaches that would be appropriate for the Twitch service and our entire community. When we have progress to discuss in that area, we will share it with you.

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Now I have to add my $1.50 opinion here. These "labels" don't give two shits about protecting the artist! It all comes down to the almighty fucking dollar and their perceived slice of the pie! IF they were looking out for the artist's TRUE INTERESTS they would be seeing these videos where streamers have music in the background as EXPOSURE! "HEY SINGER SO AND SO WE KEEP HEARING YOUR SONGS ALL OVER THE PLACE BY SOOOO MANY PEOPLE! YOU'RE POPULAR! WE WANT YOU TO DO MORE!! This in turns leads to studio time, more record deals, more concerts and ticket sales! IT GOES TO SHOW SOMEONE IS LISTENING TO THE MUSIC!!!!

They should be going after the pirate radio stations monetizing the songs with advertising, the full on copied as their own videos and such.

HELL I had 5+ hour streams killed for less than 30 seconds of a song caught in the background. I'd get DMCA takedown notice with an option to dispute. OF COURSE I hit dispute and I not so kindly tell them to FUCK OFF IT WAS #)SECONDS OR LESS. So far EVERY DISPUTE has been reversed and my video was returned to normal.

IT SUCKS MAJOR ASS THAT MY RIGHT TO LISTEN TO THE MUSIC I AM PAYING A SUBSCRIPTION FEE FOR IN THE BACKGROUND WHILE STREAMING SOMETHING THAT I AM DOING/CREATING IN MY WORKSHOP!!!

I am not out at the local park selling tickets to people to come listen to a recording of the artist's songs in a quasi-conert. I am not selling bootleg CD/DVD/What-have-you of the artists work. I am enjoying the artist's work in MY workshop, in MY home and for fucks sake I PAYED for that right to do so!!!