Ariana Grande and Mariah Carey have collaborated on a new project and are open to more collaborations in the future as their friendship grows. The music powerhouses are also set to release a song with Barbra Streisand titled “One Heart, One Voice” on her upcoming album. Mariah's twins were fans of Ariana, which sparked their initial collaboration, and Mariah has been supportive of Ariana's acting career, particularly her role in Wicked. The two singers are planning to spend more time together now that Ariana has finished filming Wicked.