Nintendo has launched its own music streaming service that requires a online membership, not only are most popular game OSTs catered for, the app also provides themed playlists, made for the listener. These are based on characters, games, moods and their listening history. Tracks can also be extended up to an hour with an in app feature.

I have first hand experience as my partner has been listening to the mariokart ost

https://www.engadget.com/entertainment/streaming/nintendo-music-is-a-streaming-service-for-switch-online-subscribers-130035796.html?guccounter=1&guce_referrer=aHR0cHM6Ly93d3cuZ29vZ2xlLmNvbS8&guce_referrer_sig=AQAAAMP64Ztas0fPqW75HtN52zLEd1VIyYkcN8iGGJFI3Ivn_kMif5AhIV9xVf_AMuk0dERCWqHEZHR4e7rkS4RXUN3oazahrhAjeuWp-GFzKrKj-eGkd5DaN1XQ_idms-bRnyi93au1xP032x5N0eRMrce_wqUbs81ujbVWL2M0xNhM