Eric Clapton: Layla, 1975, an audience recording  This comes from the well known ROiO "Legendary LA Forum Show" and it is an example of a "not so" old audience recording. I took the snapshot at 0:06min (at the moment when people start clapping)   1. original sound/lossless compression Note that the upper part of the original spectrum has already been a little bit affected during the recording by the attributes of the  microphone used   2. mp3 compression (320kbps, BladeEnc. 0.91) the sound-distortion in progress   3. mp3 compression (160kbps, BladeEnc.0.91) good by trebles :))