Crush 40 is a rock band best known for creating music for the Sonic the Hedgehog video game franchise, with their signature song "Open Your Heart" becoming iconic in the series. The band was formed by guitarist Jun Senoue and vocalist Johnny Gioeli, and has composed numerous tracks for Sonic games since the early 2000s. Their energetic rock sound has become synonymous with the Sonic brand and they continue to contribute to the franchise.