Oliver Tree Nickell (June 29, 1993 – June 14, 2026) was an American singer-songwriter, record producer, rapper, and filmmaker. Born in Santa Cruz, California, Tree signed to Atlantic Records in 2017 after his song "When I'm Down" went viral and released his debut studio album Ugly Is Beautiful on July 17, 2020. He achieved international recognition with his songs "Life Goes On" in 2021, and "Miss You" in 2022. He released his second studio album Cowboy Tears on February 18, 2022, his third studio album, Alone in a Crowd, on September 29, 2023 and his fourth and final studio album, Love You Madly Hate You Badly, on April 24, 2026.