About SonataCX At Sonata, SonataCX is featured as a key product and service offering, delivering innovative customer experience solutions while being an integral part of our broader service portfolio. This highlights that SonataCX is part of Sonata's service suite, which has been improving customer experience experts worldwide since 1995. From humble beginnings and an aspirational name, our belief and determination grew GAPbuster Worldwide from a local start-up to a truly global success story. Today, as SonataCX, we have offices and teams of customer experience experts worldwide, covering the widest range of measurement programs in over 100 countries.