However, he wasn't the only one to perform.
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Even stars that couldn't be there, paid their respects.
In between performances, video messages from Miller's fellow musicians were played to the audience. Mayer sang "Small Worlds" and kept a recording of Miller's voice playing in the background. Grande shared a selfie on her Instagram story of herself snuggled up to Mac's dog, Myron, while wearing a white hoodie that reads "I'm not a rapper" across the front.
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L'autre demi-finale opposera l'Autrichien Dominik Thiem au Russe Karen Kachanov, tombeur d'Alexander Zverev . Le Bosnien Damir Dzumhur (52e), souffrant de douleurs lombaires, a abandonné lorsqu'il était mené 6-1, 2-1.
In a video message, Donald - who goes by the stage name "Childish Gambino" - said: "Thank you, Mac, for sharing your soul and your beauty with us, especially your love of music".
According to TMZ, all of the performers joined Miller's family onstage at the end of the show.
Now the McCormick family is revealing that tomorrow night's Mac Miller: A Celebration of Life event will be livestreamed on various streaming platforms including Youtube, TIDAL, Facebook, LiveXLive, Twitter, and WAV.
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Dylan Reynolds, who described himself as Miller's best friend since childhood, performed first with a cover of the rapper's Come Back To Earth.