Martin Edward Murphy (born 1 January 1956), commonly known by the pseudonym Martin Plaza, is an Australian singer-songwriter, musician and visual artist who is a founding member and vocalist and guitarist of the new wave band Mental As Anything. He has also worked with other bands and is an accomplished artist. Plaza also has a solo music career and had a No. 2 hit in Australia with his 1986 cover of the song "Concrete and Clay". In 2013, Martin underwent surgery for kidney cancer and is currently on chemotherapy.