What changes did mathew Knowles make after the girls signed with Columbia?

After Destiny's Child signed with Columbia Records, Mathew Knowles implemented several strategic changes to enhance the group's success. He focused on refining their image and sound, emphasizing a more polished and mainstream appeal. Knowles also prioritized the development of the group's branding and marketing, which included choreographed performances and coordinated outfits, helping to establish their identity in the competitive music industry. Additionally, he played a pivotal role in the production of their music, ensuring high-quality recordings that aligned with industry trends.