So I find that when I'm working I like to have both background/white noise going (such as rainfall and coffee shop noises) while I'm listening to a playlist. I used to be able to do this on my Mac, by combining an app, noiz.io, with Spotify, but I've sinced moved jobs and now have to use my iPhone to stream my music, but can't get the background noise to work simultaneously.
Probably a very much me problem and not something others might be interested, but thought I would put it out there.
Updated on 2019-04-02
This idea has been submitted one year ago, but unfortunately hasn’t gained enough votes during that time (100 votes/year). In order to keep an overview of the active ideas in this forum, this idea will be closed for now. Note that this does not mean the idea has been declined by Spotify.
Please feel free to re-post this idea if you still feel you want this implemented. With a little change in presentation, maybe this time it will gain the necessary support from the community.