 As the need to transfer audio material between different studios grew, there was an increasing demand for standardization across the recording industry; the success of Hidley's acoustic design was copied at other sites, and "Westlake-style" rooms spread to a number of other studios by the late 1970s.Westlake has been credited as "one of the first big commercial efforts to produce acoustically standardised 'interchangeable' rooms".Artists who have recorded music at Westlake Studios have included Donna Summer, Giorgio Moroder, Quincy Jones, Billy Idol, Bruce Swedien, Gilberto Gil, Missy Elliott, Madonna, Marilyn Manson, Aaliyah and Justin Timberlake.