Haouari Djaffar Ben Setti (in Arabic: جعفر بن ستي) (24 December 1962 – 8 June 2023), known as Djef, was an Algerian trumpeter and saxophonist.

He collaborated with numerous singers such as Khaled, Mami, Sahraoui, Fadela, and Rachid Taha, as well as Marc Moulin, participating in their albums and accompanying them on international tours.

[4] Djaffar began his career as a trumpeter with Mohamed Belarbi's orchestra,[4] where he became active in the late 1970s and early 1980s on RTA d'Oran.

He also collaborated with Cheb Mami on the song "El Ghalia," as well as with other artists such as Fadela, Rachid Taha, and Marc Moulin, accompanying them on international tours in Europe, Latin America, Japan, Egypt, and around the world.

[8] His body was repatriated to Oran and laid to rest on 10 June after the Asr prayer at the Ain El Baida cemetery.