The research covers a novel approach around how one can test the impact of inclusion of auditory stimulus on user experience at commonly occurring touch points on digital platforms like notifying, splash screens and payment success indication. The study initiates with a review around what is user experience, the domain of sound design and existing potential sound design testing methods. Then building up a new agile method of testing impact of these sounds on UX and brand identity by combining Attrakdiff questionnaire with brand traits and specific sound characteristics. The results from the study helped in identifying crucial brand traits for designing auditory stimulus specific to the brand along with the effect of designed sounds on the existing UX and the preference of sounds for the concepts being tested.