In reviews, Q Magazine labelled the album "surely the most innovative worldly sound of 1990…(it) represents a giant, mesmeric leap on from Clannad as "Harry's Game" was in its time," while the Guardian described it as "ethereal and utterly absorbing." Entertainment Weekly was particularly enthusiastic, commenting that "this magical treat is a reminder that world music means more than just African or Brazilian exotica. It's any style that takes its soul from a particular tradition and its brains from more global sensibilities — it's the sound of many cultures chatting to each other." While criticising Swan's solo instrumentals as "pretty but unfortunately sound(ing) too much like New Age wallpaper", the reviewer concluded that “the sources are treated with muscle as well as respect… Mackenzie's sinewy voice and the deliciously knotty Gaelic lyrics are the album's strong suits… Mouth Music's combination of intelligence, beauty, and nerve has the power to unite both world-beatniks and mainstream rock fans in mutual exhilaration.”