Kex was a Hungarian rock band, active between 1969 and 1971. The band formed in December 1968, led by frontman János Baksa-Soós. The classic line-up included Iván Bianki, Miklós Doleviczényi, Attila Imre and András Kisfaludy. Even though they often performed as the open act for Illés, enabling them to play a relatively large number of gigs, the audence usually did not understand their music. Their live shows were characterised by constant improvisation, both musically and regarding stage presence.