Artist Biography Party Supplies is the stage name of American production duo Justin Nealis and Sean Mahon. Once Nealis began to work with Action Bronson on Blue Chips, he brought in Mahon to join the group. Production credits include Action Bronson's critically acclaimed mixtape Blue Chips, and the follow-up Blue Chips 2. Other production credits include Danny Brown's song "Grown Up" in which Rolling Stone magazine named the 41st best song of 2012. On August 27, 2013, Justin Nealis and Sean Mahon released their first album as a group titled Tough Love. on Fool's Gold Records. Rolling Stone rated "Tough Love" as the 13th best dance album of 2013 and described the album as being "dance music for introverts."