The first post-MacKenzie Mouth Music release was the Mouth Music & Mairi MacInnes EP "Blue Door Green Sea" in 1992. For this EP, Swan's instrumentation was augmented by contributions from Shooglenifty (and future Capercaillie) drummer James Mackintosh, and from Martyn Bennett (who returned to play flute and pipes). Mairi MacInnes was an up-and-coming award-winning traditional Gaelic singer (who had also previously recorded with Runrig). She had been called in at the last minute to take MacKenzie's place in a coast to coast North American tour in 1991, booked after the Mouth Music album had spent 5 weeks at No 1 in the Billboard World Music Charts.