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Her longtime friend Connie Portis confirmed the news ina Facebook post, writing that Davis had cancer.

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A press statement later confirmed the news.

She married the jazz trumpeterMiles Davisin 1968, and helped expand his tastes to funk and rock music.

They divorced in 1969.

By the end of the 70s, Davis had stopped performing music.

During that time many thought she was in hiding and did not want to be found.

This is not true, Portis wrote in her Facebook post.

She released the songA Little Bit Hot Tonight,performed by the ethnomusicologist Danielle Maggio, in 2019.

Betty has been the guiding light in everything we do at Light in the Attic.

Her unbending DIY ethic and groundbreaking spirit will live on forever.

Davis reflected on her exit from the public eye in a rare 2018 interview withthe WashingtonPost.

I like that nobody knows who I am when they see me.

I like to live quietly, she said.

This post has been updated throughout.