Hi @Bustedbones! Welcome to community.
Something to keep in mind, we don't alter music equalization on Pandora from how it appears on the original releases, unlike radio, which compresses the entire broadcast. So some songs sound louder than others.
We do use the Replay Gain technique that encodes a fixed volume adjustment into the mp3/mp4 header so that the actual player (web browser, phone or device) can adjust volume just as the track begins playing.
If there is a vast differences, it could also be due to different instrumentation or arrangements causing different apparent levels of volume where the actual decibel levels are the same.
If you're experiencing a continued increase in volume, (meaning the volume continues to get louder and louder without change) I can offer some standard troubleshooting that may help. Let me know the web browser you're using and the version you're currently on. Also, if you tend to use only one web browser, I would try a different one to see if you're having the same experience. For example, if you're using Chrome, try Firefox.
Thanks for the help.
