Audio levels changing

[LUNCHBOX55]

 I have cut a few commercials using AA and just edited a mix from a dj session I did. 

In both times I noticed mysic and the background music (commercial) the levels changed on their own. Like an audio rollercoaster. What am I doing wrong? 

I am an ace with AA in older versions but the newest version at home (quarantine mode) is driving me bananas. Help. 

[SteveG_AudioMasters_]

Insufficient information, I'm afraid. What view are you using to play these back? Waveform or Multitrack? If it's a Multitrack session, is there automation on it? If there is, try turning it off. To find out, the trick is to open the mixer view, play it back and see if the faders move...