John H. Brandt has designed studios, performed technical service, and/or produced/engineered records for: Eddie Kramer, Byron Gallimore, Ray Kennedy, Max T. Barnes, Randy Thomas, Bob DiPiero, Dennis Morgan, Gene Breeden, Owen & Bobby Bradley, Wayne Carson, Hank Cochran, Michael Lunn, Richard Dodd, Hal Rugg, Bernie Leadon, Mark O'Connor, Jim Mckell, Gary Talent, Marshall Morgan..... Designed and built custom audio electronics for many of the studios and performers including Billy Gibbons, Mark O'Connor and Paul Simon.

John began his carreer in 1971 working wirh local bands and then with ex-Fleetwood Mac member, Jeremy Spencer (1974). He toured Belgium, France, Germany, and Italy doing live concerts. Assistant engineer at ABC recording studio in Paris, France. Engineer at Bobby Solo's Studio in Laurentina, Italy (Rome - 1975-6). London and Midlands (Leicester & Birmingham), England, where he had his own business repairing and re-building amps and doing studio work & live performance sound (1976-1980).

He owned & operated JHB Sound Productions recording studio in Harker Heights, Texas (1984-1986) and engineered live concerts for The Judds, Michael Martin Murphy, Tanya Tucker, David Clayton Thomas, etc. In 1986, he became chief engineer for Bob Millsap at Ironside Studios in Branson, Missouri and worked with Rodney Dillard, Ray Price, Shoji Tabuchi, Tommy Overstreet, Sissy Lynn daughter of country music legend Loretta Lynn, and many more. In 1989, he created Brandt Audio Devices in Nashville, Tennessee and designed & installed at least two dozen recording studios in the Nashville area (1990s).

In 1998 John installed Blue Heaven Studios in Salina Kansas with Neil Muncy. In 2004 he built Song Garden Studios in the Detroit area as well as many others. And in 2008 John relocated to Jakarta, Indonesia to join his wife who is now expecting a baby girl in April 2010. He has since started two new companies: JavAkustik and West Java Audio.