This section gathers general reflexions, rather than technical ones, on
music, Jazz, improvisation as well as any strongly or weakly connected
topic. Those articles were written on various occasions, which I will
recall in their preamble.
Some ideas on how to tackle complex Jazz scores, on the harmonic but
also rythmic plans. The general idea is that the coherency of an
improvised discourse comes from the transitions between keys rather
than the keys themselves.