"¿Qué voy a hacer sin ti?" (Spanish pronunciation: [ˈke ˈβoj a aˈθeɾ sin ˈti], "What Am I Going to Do Without You?") is a song recorded by Spanish singer Mikel Herzog. The song was written by Alberto Estébanez and Mikel Herzog himself. It is best known as the Spanish entry at the Eurovision Song Contest 1998, in Birmingham. On the night of the contest, the song was performed 4th, following France's Marie Line with "Où aller" and preceding Switzerland's Gunvor Guggisberg with "Lass ihn". The song received 21 points, placing 16th in a field of 25.