Any Mahler recording by Bruno Walter is worth checking out; however, his one I find disappointing. It's not because of the performance - which is magnificent - but from the intrusive level of ambient audience noise. With historical live performances, one can expect a certain amount of shuffling, coughs, sniffles, sneezes, cellophane candy wrappers being played with, nose blowing, throat clearing, grunting, wheezing, purses snapping shut, rustling of concert program pages, mumbling and God-knows-what being dropped to the floor. Normally I don't mind all this if it's recessed in the background. What we have here is every extraneous sound right at center stage. Perhaps this is due to the sonics of Carnegie Hall, or where the recording equipment was located. It's like a roving reporter with a microphone went into the crowd to catch an audio close-up every time someone was about to make some sort of noise. And it's all saved right here for posterity. So... if you want a stellar example of what audience behavior was like in the late 1950's, this one fits the bill perfectly.