[Tobiah]

Android phone plays Spotify over bluetooth into car stereo.
Particularly soon after starting play, I get what sounds like
speed changes as though someone has their finger on an LP.
After a while it smooths out. I'm getting maybe a couple
of hundred cents variation, just as a guess.

I was curious as to who was responsible. I haven't tested
with another device but I suspect the 2017 Hyundai.