Music superstars Chris Martin and Keith Urban performed free live-streamed concerts for their fans from their homes on Monday, which lead more stars to follow suit.John Legend announced on Monday that he would hold his own free concert on Tuesday, through Instagram Live.Additionally, Katharine McPhee and her husband David Foster have announced their own free concert on Tuesday.Scroll down for video Free concert:John Legend announced on Monday that he would hold his own free concert on Tuesday, through Instagram Live David and Katharine:Additionally, Katharine McPhee and her husband David Foster have announced their own free concert on TuesdayThe free concert trend was started by Coldplay frontman Chris Martin, who announced on Twitter.
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