Seriously, this is a safety issue.
I cannot tell you the times when I've been running on the sidewalk in town, or driving through an intersection and that ad plays. All of a sudden I think someone is honking at me, as if they are about to hit me, or I did something wrong, went through the intersection at the wrong time or someone got cut off, or I'm about to get hit by a car as I run through a crosswalk. I take my foot off the gass pedal and almost slam down on my brake. I have to look around to make sure nothing is going to hit me, then I realize its the Spotify Premium Ad.
Honesly, I equate it to yelling "Fire!" in a movie theater.
Replace it with a different ad, I'm not saying play them less frequently for free users, I get it, we're borrowing a service that you should pay for, so by all means play an ad here and there. Just not one that jars you because you think something dangerous is happening around you.
Change it to a boring boss talking in a meeting, then to a traffic noise (no car horns) or something like that. I just don't like an ad that freaks me out like a car accident is about to occur.
Updated on 2017-10-24
Thanks to everyone that voted on this idea, I can confirm that we are not serving ads that contain car horn sounds. We were previously, however they've since been paused. Our teams are working hard to ensure they are not a part of new audio assets moving forward.
Your feedback here makes a direct difference at Spotify. Thanks again!