Arno Cost

Vadim Arnaud Constentin, known professionally as Arno Cost, is a French musician, DJ, and record producer associated with electro house and progressive electro house. He is from Nogent-sur-Marne, France, and has also been credited under a range of alternate names, including Vadim Constentin, Arnaud Cost, Arno & Cost, Arnos Cost, Cost, Vadim Arnaud Constantin, and BB Law.

Working primarily under the Arno Cost name, Constentin’s recorded output has been linked to electronic dance music styles that sit between electro house and more progressive forms of electro house. His discography is also connected in part to Enroute Records, reflecting activity within the label-based ecosystem typical of contemporary electronic music production and DJ culture.

Alongside his main stage name, Constentin’s use of multiple aliases indicates a practice common among electronic producers, where different credits can be used across releases, collaborations, and projects. In his case, these alternate names appear in various forms and spellings, including both given-name variants and project-style credits such as Arno & Cost.

Arno Cost is widely described in reference sources as a French DJ and record producer, with his professional identity centered on electronic music performance and studio work.