As always, the EFG London Jazz Festival 2015 draws together the most concentrated and focused selection of improvised music in the capital over the course of 10 days. There remains a commitment to bringing over some international big hitters, including some legends of the music, and placing them alongside rising young stars or homegrown talent, sometimes as part of judiciously selected double bills. Whilst some of the artist selections sometimes feel predictable, the fringes of the festival serve to highlight the extraordinary quality of thrilling live improvised music that can be heard across London pretty much every week, often bringing it to a deservedly wider audience.