Tackling a modern dance-pop anthem like “Cold Water” on The Voice UK requires exceptional rhythm, youthful charisma, and flawless breath support. For 16-year-old Southampton student Donel Mangena, stepping onto the big stage was his dream moment to showcase both his silky R&B vocals and his effortless dance moves. As the upbeat tropical-pop rhythm started echoing through the auditorium, Donel stepped under the lights with magnetic star quality. But backstage, the real star power was building: his incredible 70-year-old grandmother, Nanna Nunu, was dancing with pure, uninhibited joy alongside host Emma Willis! After a hilarious and passionate pitch battle where Will.i.am literally wrote him a handwritten note, Donel chose to join Team Will.