Miley performed covers of Fleetwood Mac and Coldplay during her soundcheck before her Boston concert last night.
Her little sister Noah joined her onstage after she struggled to finish the songs.
Watch her tributes here.
View this video on YouTube
View this video on YouTube
The musician also opened up about her loss to her fans on Twitter.
Today is the 2nd worst day of my life
I don't wanna say it because I don't want it to be real... But my precious baby Floyd has passed away I am broken
I miss him so much
RIP Floyd :(
I know I don't mean it but I wish he would've taken me with him this is unbearable. What am I gonna do without him?