Àngel Llàcer

The provided news articles are about Rosalía's concert in Barcelona and do not mention Àngel Llàcer. Therefore, it is impossible to provide a summary about Àngel Llàcer based on this information. The articles discuss Barcelona's history of hosting international music stars and contrast that with Rosalía's more down-to-earth arrival at her concert. The articles highlight Rosalía's Catalan identity and her international success, emphasizing the unique nature of her performance in her hometown. Without any mention of Àngel Llàcer in the provided context, any information about him would be speculative and not based on the given source material.