Another landmark record in terms of production, this is one of those records that still sounds amazing over 40 years on. Like the previous song on this blog, it has a hook whereby the time signature sometimes changes. Golden Brown adds an extra beat here and there, but Heart of Glass skips a beat. Reportedly the result of an editing accident which was kept when it sounded great, the result is an iconic “middle 8” section which sounds wrong when repeated in normal time in an extended version.