duotone audio group | 988 followers on LinkedIn. we are a bespoke music and sound production company that creates award winning content for a wide range of media. | duotone audio is a bespoke music and sound production company that creates award winning content for a wide range of media. clients and collaborators call upon duotone for original music, supervision, audio post, sound design, artist collaborations, strategy, consultation, podcast development and production, and mixing.