Elfonda Mekel, (born 21 May 1970), better known as Once Mekel ([ˈɔntʃə], pronounced Ohn-chè), is an Indonesian singer, researcher, music industry observer, entrepreneur, and politician. He started his career as a singer after completing high school, by becoming a semi-professional singer.
After being part of the research management field and achieving success as a vocalist, Once was invited to join Dewa 19, which had renamed itself Dewa, replacing Ari Lasso as the lead vocalist after the completion of the Pandawa Lima album (1997) and the single Elang (1999).
