Now which you mention it, the initial two tracks appear to absence very low bass, (besides a bass drum hit just prior to the fade away from Custard Pie). But then “In My Time of Dying” seems to have some much more bass… not sure what was occurring right https://led-zeppelin-gold-records56553.blue-blogs.com/32921167/the-smart-trick-of-led-zeppelin-gold-records-that-no-one-is-discussing