Wonder, 69, revealed the news as he concluded his headline performance in the Barclaycard Presents British Summer Hyde Park concert series.
The superstar alt-pop acts will be joined byLykke Li, Khruangbin and Nadine Shah and many more still to be announced.
Further names are due to be announced for this historic one-off show scheduled for 12 July 2019.
The Cure have announced a huge festival headlining show at the 2018 British Summer Time Festival in London's Hyde Park to celebrate 40 years
Stevie Wonder is to bring his hugely-acclaimed Songs In The Key Of Life tour to the UK for the first time, in the classic album's 40th anniversary year.