[1] He formed TNT in Trondheim in 1982 along with vocalist and rhythm guitarist Dag Ingebrigtsen, bassist Steinar Eikum and drummer Diesel Dahl.

Le Tekrø released his debut solo album, Extra Strong String, in 1998.

[2][3] Among his admirers are Ozzy Osbourne, George Lynch, Nuno Bettencourt, Dimebag Darrell and Zakk Wylde.

[2][10] Wylde has been an outspoken fan of Le Tekrø for many years and served as a guitar tech for the latter during a TNT performance in July 2023.

[15][16] His main live guitar is a light pink, stratocaster-shaped ESP from the early-eighties, dubbed the "Holocaster", with a Seymour Duncan bridge pickup.

Hamburger also built a 12-string hollow body guitar that Le Tekrø has used on various tours and recordings.

[18][19] He stated in an interview with Norwegian newspaper Aftenposten in 2007 that Wicca helps him deal with matters such as death and guilt, and that he prefers it to "fairytales from the Middle East which have thrown an entire world into war".