There were technical issues with the sound during the evening. Spanish singer Karina started her song with her microphone switched off and the first verse wasn't heard at all. The same happened with the Dutch singer, with the aggravating circumstance that when they switched the microphone on, again without the first verse heard at all, there was a long and loud screeching sound that startled chorus musicians on the background, and the whole first strophe from the singer, who kept on performing as if nothing was happening, was barely heard behind that sound, until they fixed it.