Rio, the double-disc solo concert recording by Keith Jarrett, marks his 40th anniversary as an ECM recording artist; coincidentally, Facing You, his debut for the label, was a solo piano recording, though cut in a studio. Many of Jarrett's improvised solo concerts have represented benchmarks in his career: The Köln Concert, The Sun Bear Solo Concerts, and La Scala among them. His musical and philosophical approach toward recording this way has evolved and been refined over the decades, but nowhere more so than on Rio, a complete document of his show at the Theatro Municipal in Rio de Janeiro in April of 2011.