John Meagher of the "Irish Independent" named "Music In Mouth" the fourth best Irish album of the 2000s and the 30th best of all time, while RTE’s Harry Guerin described it as a band "pushing themselves in different directions and coming up with a joy and sadness that prove as contagious as each other [...] a band thinking outside the a, b, c of guitar rock". Hot Press magazine described the record as "more unified, distinctive and cohesive" offering than "Neither Am I" that showcased the band’s "multiple directions", while Entertainment.ie claimed that the album should see Bell X1 at the forefront of a new Dublin rock movement.