The genre first developed in Germany in the mid-1990s to the early 2000s from various currents, mainly the Eurodance, Happy Hardcore and Uplifting Trance. Representatives of Eurodance such as Starsplash (Charly Lownoise & Franky Tunes) and Mark ‘Oh are sometimes regarded as forerunners of Hands Up. The biggest commercial success was the music until the mid-2000s, Scooter made it with Nessaja at number one on the singles charts. Even artists like Groove Coverage, Brooklyn Bounce and Cascada had some success in the upper charts. https://de.wikipedia.org/wiki/Hands_up