Ibadan, his alma mater, for research on African theatre, and he returned to Nigeria. After its fifth issue (November 1959), Soyinka replaced Jahnheinz Jahn to become coeditor for the literary periodical Black Orpheus (its name derived from a 1948 essay by Jean-Paul Sartre, "Orphée Noir", published as a preface to Anthologie de la nouvelle poésie nègre et malgache, edited by Léopold Senghor). He produced his new satire, The Trials of Brother Jero in the dining hall at Mellanby Hall of University College Ibadan, in April 1960. That year, his work A Dance of The Forest, a biting criticism of Nigeria's political elites, won a contest that year as the official play for Nigerian Independence Day. On 1 October 1960, it premiered in Lagos as Nigeria celebrated its sovereignty. The play satirizes the fledgling nation by showing that the present is no more a golden age than was the past. Also in 1960, Soyinka established the "Nineteen-Sixty Masks", an amateur acting ensemble to which he devoted considerable time over the next few years. Soyinka wrote the first full-length play produced on Nigerian television. Entitled My Father's Burden and directed by Segun Olusola, the play was featured on the Western Nigeria Television (WNTV) on 6 August 1960. Soyinka published works satirising the "Emergency" in the Western Region of Nigeria, as his Yorùbá homeland was increasingly occupied and controlled by the federal government. The political tensions arising from recent post-colonial independence eventually led to a military coup and civil war (1967–70). With the Rockefeller grant, Soyinka bought a Land Rover, and he began travelling throughout the country as a researcher with the Department of English Language of the University College in Ibadan. In an essay of the time, he criticised Leopold Senghor's Négritude movement as a nostalgic and indiscriminate glorification of the black African past that ignores the potential benefits of modernisation. He is often quoted as having said, "A tiger doesn't proclaim his tigritude, he pounces." But in fact, Soyinka wrote in a 1960 essay for the Horn: "the duiker will not paint 'duiker' on his beautiful back to proclaim his duikeritude; you'll know him by his elegant leap." In Death and the King's Horsemen he states: "The elephant trails no tethering-rope; that king is not yet crowned who will peg an elephant." In December 1962, Soyinka's essay "Towards a True Theater" was published. He began teaching with the Department of English