[10] At 13 years old, he won an international DJ competition, beating out 63 competitors of all ages and winning a prize money of 300 Euros.

[10] After school, he completed an apprenticeship in retail and began working as a salesman for washing machines in the Swiss electronics store chain Fust.

His career as a hip hop producer began in 2012, after being contacted by Austrian rapper Nazar and subsequently signing a deal with his label Wolfpack Entertainment.

[13] According to OZ, he contacted American record producer The Beat Bully on Twitter and paid him 250 Swiss francs for rapper Meek Mill's e-mail address.

[13] Both times, a placement was the result: in the case of Meek Mill, OZ ended up producing the songs "Been That" (featuring Rick Ross) and "Cold Hearted" (featuring Puff Daddy) on the rapper's 2015 album Dreams Worth More Than Money and in the case of Travis Scott, he produced the song "Backyard" on his 2014 mixtape Days Before Rodeo.