Stormzy will headline Friday night at Longitude at Marlay Park in July.
He became one of the biggest male solo acts in 2016 with a UK number one single with 'Gang Signs and Prayer'.
Joining Stormzy on a Friday night, are Irish breakout stars Picture this.
They'll be followed on Saturday night by the Weeknd, and 2016 Mercury Music Prize winner Skepta.
Sunday night promises to be just a busy with Mumford and Sons headlining, along with Gentlemen of the Road Stopover and Jack Garratt.
Other acts taking part across the weekend will be:
- Catfish & The Bottlemen
- Glass Animals
- Mac Miller
- Dua Lipa
- Milky Chance
- Tom Misch
- Loyle Carner
- The Very Best
- Jorja Smith
- Baaba Maal
- Lucy Rose
- Rex Orange County
Longitude takes place from July 14-16 at Marlay Park.
Tickets go on sale Friday, March 10 and 9 am.