Hi stargirlhorse!
I understand that songs are speeding up in the Music app, and Siri is randomly popping up on your iPhone. I can understand your concern, and I'm happy to help. If you haven't already, please try restarting your iPhone:
Restart your iPhone, iPad, or iPod touch
If you're still having this issue, back up your iPhone before proceeding:
How to back up your iPhone, iPad, and iPod touch
Once you have backed up, you can reinstall the iOS software using this link:
If you can‘t update or restore your iPhone, iPad, or iPod touch
If the issue is still present, try restoring the iPhone to factory settings and setting it up as a new iPhone:
Restore your iPhone, iPad, or iPod to factory settings
If this issue is present after restoring to factory settings, you can contact Apple Support using this link:
Cheers!
Music speeding up? Rogue siri?
