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Valters and Kaža, sometimes spelt Walters and Kazha is a Latvian duo who represented their homeland in the 2005 Eurovision Song Contest. The slow ballad-like song, "The War Is Not Over", finished in 5th place despite having a considerably large lead at some point during the voting. Their full names are Valters Fridenbergs and Karlis Bumeisters.
In the semi-final, which was held two days before the final, Valters and Kaža qualified as tenth. Unfortunately, Valters lost his voice at the after-party. This was so bad that at the dress rehearsal Valters did not sing during the entire song. Fortunately he was able to sing at the live final, although Valters and Kaža sang one of the final parts one octave lower than they should. One could clearly see that Valters was relieved that it worked out.
Valters made a solo effort to represent Latvia at the Eurovision Song Contest 2009, but did not make it to the Latvian finals in the town of Ventspils in March.
Valters and Kaža both provided the Latvian commentary for the 2011 Contest. Also, Valters presented the voting results on behalf of Latvia at the 2012 Contest.