Authority Zero are a punk rock band from Mesa, Arizona, formed in 1994. Known for a high-energy blend of melodic skate punk with reggae/ska grooves and occasional Latin influences, they built a strong DIY following before breaking out in the 2000s. Their debut album A Passage in Time landed in 2002, followed by fan favorites like Andiamo (2004) and Stories of Survival (2010). Still active today, the band continues touring and releasing music, celebrating 30 years as a group.

Melonball are a punk/skatepunk band from Nuremberg, Germany, formed in 2019.
They play fast, technical, melodic punk rock with politically charged lyrics and tight, high-energy live shows. The band quickly made a name on the European scene through extensive gigging and festival appearances. Their debut album Breathe came out in 2023 via Thousand Island Records and Lockjaw Records. They followed with the EP eup•nea (2024) and continued building momentum internationally.