Now that you mention it, the first 2 tracks appear to absence very low bass, (other than a bass drum hit just before the fade outside of Custard Pie). But then “In My Time of Dying” appears to have some extra bass… undecided what was occurring here, possibly recorded https://tysonojuek.blogdun.com/27235226/helping-the-others-realize-the-advantages-of-led-zeppelin-gold-records