Carnegie Hall Jazz ConcertAmazon. com In jazz, live recordings not only document an artist or group's sound in its purest form but, in rare cases, herald the arrival of a musical genre. That's the case with this invaluable, two CD collection that captures clarinetist Benny Goodman's historic 1938 Carnegie Hall concert, which exemplified the so called "swing era." Originally released in 1950, it contains rare commentary from Goodman and music from the entire event, which was a