Justin Timberlake pays tribute to his late backup singer Nicole Hurstwho recently died at the age of 39.

Hurst, who also appeared on stage Kelly Clarkson and Janet JacksonHe died after battling cancer repeatedly for eight years, although the official cause of death was not disclosed.

“My heart is so heavy,” Timberlake wrote on Friday, August 6, on Instagram alongside photos and videos of Hurst. “We lost a beautiful soul this week. Nicole lit every room she walked in. On and off the stage she was a constant source of joy and positivity. Some things feel so unfair and we will never understand why them.” What I do know is that we have been blessed to laugh with her, travel with her, and experience her infectious smile and love for a life full of music. “

In his post, Timberlake added a video that featured Hurst at one of his concerts with a solo performance by Lauryn Hill‘s “Ex-Factor”, where he accompanies her on guitar. In another clip, she says about the pop star, “my bro over here” picked out the song that he added to his setlists on his Man of the Woods tour in 2018.