Audra McDonald and Björk have been named to the TIME 100 List, the magazine's annual list of the world's Most Influential People. Richard Linklater, the director of the film Boyhood, was also named to the list. A tribute to each person on the list—which includes Barack Obama, Hillary Clinton, Ruth Bader Ginsburg, Malala Yousafzai, Pope Francis, and Kanye West, among others—was written for the issue by a noteworthy individual, one of the many people to have been influenced by the honoree.

The TIME tribute to Audra McDonald, who has released five solo albums on Nonesuch Records and has won a record six Tony Awards, was written by Carrie Underwood, who starred with her in the live NBC telecast of The Sound of Music.

"Beautiful. Intelligent. Extraordinarily talented. These are just a few words that describe the incomparable Audra McDonald," writes Underwood. "She has acted on television and in movies, graced theater and concert stages and given a gift to countless fans with a voice that I can only describe as being blessed by God ... Never afraid to stand up for what she believes, Audra is a strong voice speaking out for humane treatment of animals, dignity for the homeless and marriage equality."

Underwood goes on to say: "I knew from the moment I heard her angelic voice that I was in the presence of greatness, and my thoughts about her were only intensified when I saw a glimpse of her amazing heart."

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Björk, who released two albums on Nonesuch—Biophilia and Voltaic—is celebrated in the issue by the artist Marina Abramovic.

"As an artist, she’s always on the edge of everything, but it’s not trendy because even when she is working with the latest technology, fashion, images or sounds, she is always offering her own, deeply personal world," writes Abramonic. "If you are really true to yourself and really follow your intuition in the most rigorous way, there is a moment that becomes universal, that reaches everybody. That’s the real magic of Björk—she teaches us the courage to be ourselves."

To read more, click here.

Also on the list this year is writer/director/producer Richard Linklater, whose groundbreaking film Boyhood was among the most highly acclaimed movies of 2014, and the soundtrack for which was released on Nonesuch Records. Linklater's tribute was written by Ethan Hawke, who starred in the film and concludes that "the consistent thread in Rick’s career has been a passion for cinema that cannot be defeated or undermined in any way." To read more, click here.

To see the complete TIME 100 list, go to time.com.