C-Bool (Grzegorz Cebulia, born May 30, 1981 in Pyskovice, Poland) is a DJ, remixer, producer. Works in the genre of electro house, house, dens. Became famous after the release of the singles "Would You Feel" and "House Baby" in 2004. The single Body and Soul, released in 2010, topped the national charts. In 2011 Grzegorz released his debut album, the compositions from which became famous and topped the charts. In 2016 the singles "Magic Sumphony" and "Never Go Avay" topped the AirPlay charts and were sold about 100 thousand copies. In 2017, the song "DJ is Your Second Name" took the 5th position in the AirPlay ranking. Grzegorz has two Eska Music Awards in the category "Best Hit of the Year".