The 43-year-old rap mogul was one of several music bosses impressed by indie duo Wardell, comprising the Hollywood director and actress Kate Capshaw's children Sasha and Theo, reported Contactmusic.
Sahsa, 23, has previously acted in films including her father's "Indiana Jones And The Kingdom Of The Crystal Skull" and sings in the band, while Theo, who is adopted, is responsible for the group's music.
"Sasha and Theo are brother and sister. That familiarity and fondness informs the music that they make together, which is at once warm and summery, comfortable and chill as a result of their Los Angeles upbringing," reads their profile page on Roc Nation's website.