As an educational service provider, Yousician strives to provide the best tools possible, for users to reach their musical goals. We are constantly working on improving our content to be able to offer you great quality songs as they play a major part in the Yousician experience.
In order to keep Yousician up to a high standard and improve the overall code quality of the app, the Song Creator and Song upload features are being deprecated. It will no longer be possible to upload songs from YouTube or cloud services nor in Guitar Pro and MusicXML formats.
Any songs which have previously been uploaded in Guitar Pro and MusicXML formats, with multiple tracks, will have synthesized backing tracks instead of audio. However, any songs which were uploaded using audio only as a backing track, such as YouTube, no longer have any audible backing track as the support for them has been removed with 2.57 update.