Any incoming message, whatsapp or email, changes the pitch and tempo of the song I'm working on in Sonar. I'd really like to know why.

Pitch and tempo changes involve shrinking or stretching audio so I don't think it's that. My best guess is that something is altering the bitrate.

The pitch is not always higher, sometimes the song gets slower and the pitch change is down.

Anyone heard of this?

Thanks - rev