IMHO this mammoth 6-disc set represents the best of Jarrett's solo piano work. His music flows so convincingly that many of my friends are surprised to learn that the Sun Bear concerts were improvised. It takes rare talent to have that kind of spontaneous creativity, and jet Jarrett plays on for 20, 30 even 40 minutes at a time without pause.Jarrett's skill as a pianist is also impressive. At times it can seem like the man has three hands... Listen carefully and you'll hear multiple musical themes emerging from some passages.The music occasionally lapses into the atonal, which can be somewhat annoying if you're not in that mood. But there are some real musical treasures in this boxed set. The first few minutes of Disc 5 are my personal favorite.