Although Post Malone wasn't officially enlisted as an artist for this year's Coachella festival, the crooner was brought on stage by Jack U to perform his hit single, "White Iverson." During a surprise performance on Sunday, the Austin artist covered Nirvana's "Lithium." This isn't the first time Malone has been covering rock music -- the singer, who went by his real name Austin Richards at the time, covered Bob Dylan's "Don't Think Twice, It's All Right" in 2013. Watch his cover of "Lithium" below.
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