Tanssitauti is an EP by CMX released in 1990. The band had released their debut album Kolmikärki earlier the same year with a different lineup. Tanssitauti is the first CMX recording to feature guitarist Janne Halmkrona, who appears on all of the band's albums from this point on.
First track was originally unnamed and referred with "...". At first band did not intend it to be published but publisher Bad Vugum convinced them to release it. Since then it has become known as "Matti" and live performance specialty.[2][3] The name comes from lyrics.