Fifty bands.One restless genre.

The bands that most decisively expanded what a rock group could compose, perform and record. Different branches, different decades, but each changed the language around them.

Canterbury wit, Dutch precision, American hard rock, French zeuhl and British experimentation push the map beyond the obvious centre.

The genre becomes less like a single British movement and more like a network of local languages, from Milan and Rome to Hamburg, Paris and Marghera.

Canterbury composition, Rock in Opposition, jazz-rock and later progressive generations show that the music survived by changing its arguments rather than repeating its costumes.

Cult favourites, singular hybrids and modern inheritors complete the route. These are not footnotes: they are doors into entirely different corners of progressive music.