Ethan Slater shares what he has learned from Ariana Grande

The 32-year-old Broadway actor will soon be seen alongside his 31-year-old girlfriend in a big-screen adaptation of Wicked - in which he plays Boq. The film also features actress Cynthia Erivo who is taking on the role of Elphaba while Grande plays Galinda - and Slater says he witnessed a masterclass in singing by working alongside the pair. He gushed to Extra, "They're amazing, they're powerhouses, they're like voices of a generation.” "Everybody knows what incredible singers they are. You think they're really different singers…”