If the Sonos One is not connected, our spotify apps work as separate accounts and we can listen to different music concurrently.
Hopefully someone can help!
Best answer by Keith N
Hello there, gub. Thanks for posting and welcome to the Community. In this case, it may be a good idea to set up a family account for Spotify. This will allow you both to have separate accounts without "stepping on each other's playlists". Be sure to add the second account to Sonos and your wife will be able to use her account while you can continue to use your own account.
Important to note: When using Amazon Alexa, there can only be one Spotify account associated with the household. Therefore, if your wife is using Alexa to start Spotify playback, she will be using whatever account was set up with Alexa. This means that you will need to choose one as a default.