Jesse Kardon, better known by his alias Subtronics, is an American dubstep DJ and producer from Philadelphia, Pennsylvania, United States. He is known for his song "Griztronics", a collaboration with Michigan-based electronic music artist GRiZ that peaked on Billboard's Hot Dance/Electronic Songs at the No. 9 position in late 2019. Kardon peaked at No. 10 on Billboard's Next Big Sound chart in September 2019. Kardon is known for his mixtape series Now That's What I Call Riddim though he has stated the mixes are not riddim despite the name. Originally released in February 2017, the series has grown to five volumes, with mo