Maddi Jane actually Madeleine Jane Gray is an American singer who became known for her cover versions of well-known songs on YouTube
Maddi Jane YouTube channel has over 400 million hits on your videos (as of January 2018). She has already been to the Billboard Social 50 Charts several times; with her cover of Rolling in the Deep, she rose to number 4.
Breakeven - Unreleased
Impossible - Unreleased
Secret - Unreleased