They join previously announced acts Foo Fighters, Royal Blood and Rag 'n' Bone Man.
As part of the station's 50th anniversary, the acts will play live versions of their own tracks as well as cover versions from across the last 50 years.The performances will take place every weekday from 1 to 29 September.
The first session will see Foo Fighters play an extended session from their studio in LA.
This will be followed by Live Lounge Specials every Friday of the month from Pink, Miley Cyrus and Jay-Z.
Other names performing throughout the month include George Ezra, Stormzy, Royal Blood and The xx.