Boris Izaguirre

The provided articles focus on the upcoming fifth season of the Spanish television show *Mask Singer: Adivina quién canta* (Mask Singer: Guess Who Sings) on Antena 3. The articles detail the show's return after a year and a half, highlighting changes to the format, including a revamped team of investigators and new mechanics. The show aims to maintain its leading position in its time slot. Arturo Valls will continue as the host. The articles emphasize the measures taken to maintain the anonymity of the masked celebrities. Boris Izaguirre is not mentioned in either article, so his current relevance or significance to the news is nonexistent based on the provided text.