Idina Menzel has collaborated with various artists since she started her singing career in the 1990s, but in a recent interview with Entertainment Tonight, the 45-year-old singer-actress revealed that she has one dream collaborator whom she’s just too shy to reach out to — U2’s lead vocalist, Bono.

“I’ve always said if I could do a duet with someone, it’d be Bono,” Menzel told the news outlet at the 2016 iHeartRadio Music Festival in Las Vegas on Saturday, Sept. 24. “My whole life, that’s all I’ve ever said. I still have not done a duet with him.”

The “Glee” alum then recalled attending the 2014 Oscars awards night when her song “Let It Go” (“Frozen”) beat out U2’s “Ordinary Love” (“Mandela: Long Walk to Freedom”) for Best Original Song. “They didn't win [at the time] but I love you, Bono, and I really want to sing with you anyway!” Menzel told Entertainment Tonight.

Menzel’s iHeartRadio Music Festival attendance comes just a day after her fifth studio album was released. The self-titled album consists of 12 tracks, including “I See You,” “Small World” and “Queen of Swords.”

Menzel said that her latest album was the “most personal, introspective album” she has ever made as the past two years of her life had been a rollercoaster ride. For instance, her film “Frozen” became one of the biggest animated movies of all time, and her divorce from Taye Diggs was finalized.

She told Entertainment Tonight on Friday, Sept. 23 that she captured all of those highs and lows in her fifth studio album. “I just use the music to really try to explore that, and write down what I was going through,” Menzel said.

Menzel is set to reprise her role as Elsa in “Frozen 2.” The sequel, however, has no release date yet.

Idina Menzel “Frozen 2” voice actress Idina Menzel revealed her dream collaborator whom she’s too shy to reach out to. Pictured: Menzel attends “Tribeca Talks Storytellers: Idina Menzel” at SVA Theatre 1 on April 18, 2016 in New York City. Photo: Getty Images/Slaven Vlasic