Jana Koubková has been singing since she was six years old in choirs, vocal groups and as a soloist. As a jazz soloist she made her name in 1975 in the Jazz Sanatorium of Luděk Hulan. Since then, she has worked in many different styles of ensembles. From blues, swing, mainstream to bebop, Latin, free to world-ethno and fusion. She founded the Vokalíza festival (1981–2000) for jazz, blues and rock singers. For six years she worked at the Prague State Conservatory in the field of performance. She participated in many festivals not only in Europe, but also in Cuba, Algeria, Senegal, Ivory Coast, Lebanon, Israel, Morocco, etc.