Hi-5 is an Australian television show for children that started in 1999. The members of Hi-5 are Nathan, Kellie, Charli, Tim and Kathleen. Hi-5 can also be known as a pop music group for young children. They sing songs, dance and act. Hi-5 have recently released an album called "Boom Boom beat!" The album has 20 tracks. "Hi-5" is very popular with children but also with many other age groups.