Oprah Winfrey went to U2's first night at the Sphere in 2023.

She was amazed by the show.

It used many senses.

She asked if the arena's 4D technology could help people do their best.

Winfrey said the experience could help people feel deeper.

It could help them feel wonder about being alive.

That idea became "Oprah Winfrey's AHA."

It is a two-hour live event.

It will be on April 2-4 at the Sphere in Las Vegas.

The arena cost $2.3 billion.

It has hosted acts like The Backstreet Boys, Phish, the Eagles and No Doubt.

Winfrey will appear with special guests and performances.

These include Jacob Collier, Ocean Vuong, Ajeet and Wintley Phipps.

Other helpers include composer Max Richter, musicians Jason White and Jon Hopkins, playwright Tarell Alvin McCraney and stage designer Es Devlin.

Tickets go on sale to everyone on Sept. 25.

Winfrey ended her talk show 15 years ago.

Last week, it was 40 years since it started in the U.S.

Since then, she has worked on her podcast, her OWN TV network and live events.

She is 72.

She said she is not ready to slow down all the way.

She said time feels short and she has something to say.

Winfrey is still very powerful.

She has her book club and her "Favorite Things" list.

She also gets support from politicians.

She said she keeps asking why she got this chance.

She does not take it for granted.

She hopes people at "AHA" will take their own chances.

She remembered Maya Angelou telling her that saying yes to the call led her to where she is.