YouTube today announced that the YouTube Music app will enable background playback for free. YouTube Music app currently allows background playback only for YouTube Premium members. If you switch to any other app or turn your screen off then the playback stops. With this feature, users will be able to use YouTube Music app as they normally would any other music app even if they are not paying customers. The free tier is ad-supported so if you don't like listening to ads between your music then you will have to pay for the Premium plan.
Source: The Nation October 05, 2021 00:00 UTC