Lemi Ponifasio is a director and choreographer who is prominent internationally with his dance Company MAU. Neil Ieremia's company Black Grace has also received international acclaim with tours to Europe and New York. Hip hop has had a significant impact on Samoan culture. According to Katerina Martina Teaiwa, PhD from the University of Hawaii at Manoa, "Hip hop culture in particular is popular amongst Samoan youth." Like very many other countries, hip hop music is popular. In addition, the integration of hip hop elements into Samoan tradition also "testifies to the transferability of the dance forms themselves," and to the "circuits through which people and all their embodied knowledge travel." Dance both in its traditional form and its more modern forms has remained a central cultural currency to Samoans, especially youths.