Ben Vishala Thapa (born 2 March 1982) is an English opera singer, best known as the low tenor in G4 from 2004 to 2018. Born in Cambridge, Thapa was raised by a single mother from the age of four after his father left, and entered foster care when he was eleven. It was during this time Thapa started singing lessons and sang in his local church choir, and played the clarinet in an orchestra while at Hills Road Sixth Form College. He studied at Royal Northern College of Music for a year before transferring to the Guildhall School of Music and Drama where he graduated from in 2004. Thapa graduated from the Wales International Academy of Voice in 2013.