When it comes to the notes she can hit, the 28-year-old rapper and singer only just found out.

I used to sing, but I didntsang, she says.

He was like, Whats your register?

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Credit: Jabari Jacobs

I was like, I dont know!

He was like, Can you sing in this key?

Shes only gone up from there.

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A few months after they met, Reed signed her to his imprint at Atlantic Recordsher first major-label deal.

Someone from MTV was like, Have you done that before?

I was like, Ive never been to an awards show before, homey!

There, she rapped with a few hip-hop groups but was equally drawn toward the indie-rock world.

It taught me how to be a crowd-pleaser, she says of touring with non-rap acts.

(The song also has an epic flute soloLizzo studied classical flute performance at the University of Houston.)

There are obstacles to her mission.

Its the most change that I can do.

EW PopFest runs from Oct. 29-30 at The Reef in Downtown Los Angeles.

For more information and to purchase tickets, go toewpopfest.com.