The first Maori programme to air on prime-time television was Below Koha in 1982. Muru along with Aroaro Hond, Robert Puwhare, Mona Papali'l and Ernie Leoard were involved.
Muru was awarded the Te Tohu Aroha mo Te Arikinui Dame Te Atairangikaahu Exemplary/Supreme Award in 1990 at the Creative New Zealand Te Waka Awards.
His life's work includes, painting, sculpture, journalism, broadcasting, directing, acting, set design, theatre, poetry and whaikorero.
He began his broadcasting career in 1966.
He was a self-taught artist although he did receive some instruction from Katerina Mataira while at Northland College.