Wilmer X is a Swedish

Sweden

Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

 rock band

Rock Band

Rock Band is a music video game developed by Harmonix Music Systems, published by MTV Games and Electronic Arts. It is the first title in the Rock Band series. The PlayStation 3 and Xbox 360 versions were released in the United States on November 20, 2007, while the PlayStation 2 version was...

. Originally formed in 1977-1978 as Wilmer Pitt in Malmö

Malmö

Malmö , in the southernmost province of Scania, is the third most populous city in Sweden, after Stockholm and Gothenburg.Malmö is the seat of Malmö Municipality and the capital of Skåne County...

, Sweden

Sweden

Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

 by Nisse Hellberg (guitar and vocals) and Jalle Lorensson (harmonica), the band was rebranded as Wilmer X at the time of the first recording.
Wilmer X achieved their nationwide commercial breakthrough in 1988 with the LP Teknikens Under, the similarly entitled title track becoming a chart topper.