Osabuohien Osaretin (born 17 March 1989),[1] better known by his stage name Sarz, is a Nigerian record producer, mixing engineer and musician.

Born in Benin City, Edo State, he is popularly known for the tag “Sarz on the beat” or "Really", at the beginning or end of all his music productions.

He has produced tracks for Wizkid, Naeto C, Banky W, Skales, Shank, Reminisce, Goldie Harvey, eLDee, Wande Coal, YQ, Lojay and Niniola.

[5] In 2010, Sarz produced the hit single "Jor Oh" and the remix for Jahbless which featured Durella, RuggedMan, Reminisce, Ice Prince and eLDee.

[16] Sarz was the executive producer for the official Hennessy Artistry 2014 theme song "Dance Go (Eau de Vie)", which featured Wizkid and 2Face Idibia.