Christopher Lennertz, veteran composer of Supernatural, Revolution and other series, has pulled off his greatest TV assignment to date: the Netflix reboot of the 1960s classic Lost in Space. He not only recorded with an orchestra in London’s Abbey Road studio, he incorporated John Williams’ original TV theme (actually, Williams’ second theme for the series, used in its 1967-68 season) as well. This Variety story explains how he went about writing eight hours of music in 10 weeks.