Judas Priest are an English heavy metal band formed in West Bromwich in 1969. The band have sold over 50 million copies of their albums to date. They are frequently ranked as one of the greatest metal bands of all time. Despite an innovative and pioneering body of work in the latter half of the 1970s, the band struggled with indifferent record production, repeated changes of drummer, and lack of major commercial success or attention until 1980, when they adopted a more simplified sound on the album British Steel, which helped shoot them to rock superstar status.

Judas Priest went into the studio in June-July 1974 with Black Sabbath producer Rodger Bain. The band released their debut single "Rocka Rolla" that August and followed in September with an album of the same name. The album features a variety of styles--straight-up rock, heavy riffing, and progressive.  Technical problems during the recording contributed to the poor sound quality of the record. Producer Rodger Bain, whose resume included Black Sabbath's first three albums as well as Budgie's first album, dominated the production of the album and made decisions with which the band did not agree. Bain also chose to leave fan favourites from the band's live set, such as "Tyrant", "Genocide" and "The Ripper", off the album and he cut the song "Caviar and Meths" from a 10-minute song down to a 2-minute instrumental.  The tour for Rocka Rolla was Judas Priest's first international tour with dates in Germany, the Netherlands, Norway and Denmark including one show at Hotel Klubben in Tonsberg, one hour from Oslo, Norway, which scored them a somewhat negative review in the local press. The album flopped upon release, leaving Priest in dire financial straits. Priest attempted to secure a deal with Gull Records to get a monthly pay of 50 pounds, however, because Gull Records were struggling as well, they declined. Rocka Rolla (1974) has been for the most part dismissed by the band and none of its songs were played live after 1976 except for "Never Satisfied", which was revived during the Epitaph Tour in 2011.

Using a quote from the above article, answer the following question: Where did they perform?
in Germany, the Netherlands, Norway and Denmark