WPP, a communications, advertising, public relations, technology, and commerce holding company, completed the acquisition of AMP, a sonic branding agency. Financial terms were not disclosed. “With the rise of streaming, podcasting and short-form media, audio has become a critical component of the marketing mix. The acquisition of amp enhances our offer to clients, helping them create immersive experiences that engage consumers on a deeper level and drive their competitive advantage," Mark Read, WPP CEO.