Heinz Hermann Polzer (German pronunciation: [haɪnts ˈhɛrman ˈpɔltsər]; 24 August 1919 – 13 June 2015), better known under his pseudonym Drs. P (Dutch pronunciation: [dɔktoːˈrɑndʏs peː]), was a Swiss singer-songwriter, poet, and prose writer in the Dutch language. Other pseudonyms were Geo Staad, Coos Neetebeem (a variant of the name of Dutch writer Cees Nooteboom) and drandus P. He had a characteristic, cracking, voice.