Task: Question Answering
Input (English): Passage: The tracks "Countdown" and "End of Time" were distinguished by their musical and lyrical experimentalism. "Countdown" was described as "everywhere on the genre map", although predominantly dancehall-led with a "bristling brass arrangement". Its chorus describes a relationship by counting backwards from ten, using a sample from Boyz II Men's "Uhh Ahh". "End of Time"'s pulsating, brass sound—reminiscent of a marching-band—was heavily influenced by Afrobeat musician Fela Kuti. Kuti's use of horns and percussion instruments was recreated and combined with elements of electronic music and synthesizers. "Lay Up Under Me" is also built on retro horns, featuring upbeat vocals, a sound Ryan Dombal of Pitchfork associated with Michael Jackson's 1979 album Off the Wall.Other tracks were noted for their retro stylization. "Rather Die Young" is a throwback to 1960s doo-wop and Philadelphia soul, with a slow tempo and modern drums. "Party" achieves a vintage aesthetic through minimalistic production, replete with heavy synthesizers and a 1980s smooth-funk groove. The song is unique for its conversation-like structure, in which Beyoncé and guest-vocalist André 3000 sing verses that allude to socialization at parties. Elements of Prince's style was found on "Schoolin' Life" and "I Care". "Schoolin' Life" is an uptempo funk song, with lyrics that advise the listener to live life to the fullest while cautioning them about the consequences of excess. The chorus of "I Care" was compared to "Purple Rain", with themes of sadness and resentment, the song uses soft background vocals and dense percussion. "Love on Top" was noted for its energetic key changes with a joyful tone, evoking the work of Michael and Janet Jackson. Its retro sound is marked by a melding of horns as well as sweet backing harmonies that are most prominent on its bridge and chorus. 
Question: What was the name of the artist that performed End of Time?
Output (English): Beyoncé.