Elfonda Mekel often called as his stage name Once is best known as an Indonesian singer and former lead vocalist of Dewa 19. He won the heart of listeners for Hit Bintang Lima, which sold 1.7 million copies. Thanks for his efforts to develop his solo career, he was named Best Pop Soloist at the 2005 Anugerah Musik Indonesia (AMI). One of his songs was chosen as Best Pop Song at AMI.
Born in Ujung Pandang, South Sulawesi, on 21 May 1970, Once started his career as a singer when he was in junior high school and then participated in singing competitions. He involved in numerous bands including Brawijaya and Dimensi. Having graduated from law at the University of Indonesia, he worked for a construction company.
Once was married to Rietmadhanty Angelica Tauchid on 20 December 2005. The couple has one son together.