Hex may refer to one of several bands: 1) Hex is a Slovak pop rock group, founded in 1989 in Bratislava with Peter Ďuďo Dudák (vocals, guitar, keyboards), Thomas Yxo Dohňanský (bass guitar, vocals), Jozef Joshka Juřička (keyboards), Peter Slameň (percussion ) Martin Fefe Žúži (guitar).http://www.hex.sk/ The group became known to the media after it took producer Martin Sarvas and the issue maxisinglu song "Good Butterfly" in music publishing Monitor EMI