Jan Senft (* 1993) is a Czech singer performing under the name "Man of Blood". He played with his older brother Lukáš in the band "Kdyžužtakuž", as Man of Blood he mostly performs alone with a guitar, but he creates recordings together with producer Tomáš Tkáč in band arrangements. He lives in Stříbrná Skalica, where he participates in the activities of local cultural associations. He studies philosophy of religion and ethics at the Hussite Theological Faculty of Charles University.