Dozens of the biggest names in music and art have come together, inspired by the efforts of the American Cancer Society, its supporters and everyone affected by cancer, to generously donate their talent and artwork to help amplify the voice of the More Birthdays movement. To date, artists such as Keith Urban, Justin Bieber, Jack Johnson, Colbie Caillat, Eric Carle, Maroon 5, Masha D’yans and more have joined the More Birthdays movement.