In jazz, all roads lead back to Louis Armstrong. He is the supreme example of the vitality of the past animating and challenging the present. Trumpeter Art Farmer acknowledged him as ‘still the mark people go after when it comes to sheer emotion speaking through music’, and the contemporary British star Guy Barker declared that any jazz lacking the Armstrong spirit was ‘going to be missing a lot’. [...] Besides his startling playing, Armstrong’s unique scat vocals brought a new dimension to improvisation: a piece like ‘Heebie Jeebies’ seems an outpouring of pure joy, a song that doesn’t need words to convey its rhythmic and melodic gusto. And on the magnificent ‘West End Blues’. his trumpet and vocal powers combine to produce a masterpiece of searing emotion.