If a star was born – or discovered – over the weekend, it was Lukas Nelson. Playing the Spotlight Stage in between a Sugarland-Kacey Musgraves' sandwich was never going to be easy, but judging by the audible gasp shortly into his performance, the son of Willie Nelson won over the audience handily. Forming his band the Promise of the Real 10 years ago, Nelson and his bandmates are no newcomers to such festivals, but a push into the U.K. market is clearly a big step. Featuring traditional country and rock & roll stories that bleed with emotion and raw honesty, Nelson's voice channels Neil Young, Chris Stapleton and his dad, but it remains completely his own. As he sung the emotive "Just Outside of Austin," the crowd was stunned, silenced and then transformed into new fans. The following night, Nelson joined Margo Price's incredible main stage set for a few songs, including a take on "Proud Mary" that spotlighted Price's own enormous vocals.