[contentcards url=”https://nypost.com/2025/04/09/world-news/singer-rubby-perez-who-performed-at-dominican-republic-nightclub-during-roof-collapse-dead-at-69/”] By Nika Shakhnazarova Merengue singer Rubby Pérez, who had been performing at a doomed nightclub in the Dominican Republic when its roof collapsed, was…