[1] He has also produced songs for, or otherwise worked with, artists such as AC/DC, Def Leppard, The Michael Stanley Band, The Boomtown Rats, Foreigner, Michael Bolton, Heart, The Cars, Bryan Adams, Huey Lewis and the News, Billy Ocean, Celine Dion, Britney Spears, The Corrs, Maroon 5, Lady Gaga, Now United, Nickelback, and Muse.
Robert John Lange was born in Mufulira, Northern Rhodesia (today Zambia), and raised in Durban, South Africa.
While studying at Belfast High School in what is now Mpumalanga province, he started a band in which he played rhythm guitar and sang harmonies.
After his national service (1966–1967), Lange formed the band Sound Reason in 1969, together with James Borthwick, a South African TV, stage and film actor.
He also worked with rock group Foreigner on 4, and with Def Leppard on their hit albums, High 'n' Dry, Pyromania, Hysteria and Adrenalize, co-writing most of the songs.
In 1999, he returned to working with them in a more limited role, co-writing three tracks for their album Euphoria, which spawned the single "Promises", a Number 1 hit on the mainstream rock charts.
[citation needed] In 1991, he produced Bryan Adams's Waking Up the Neighbours, including co-writing "(Everything I Do) I Do It for You" for the Kevin Costner film Robin Hood: Prince of Thieves which – with 16 consecutive weeks at the top from 7 July to 26 October 1991 – holds the record for the longest number of consecutive weeks at Number 1 in the UK singles chart.
[citation needed] In the 2001 television film Hysteria – The Def Leppard Story, actor Anthony Michael Hall portrayed Lange.