Original sentence: In many cases, the notation of music is only one part of the method of communication between musicians, the other being oral tradition.Thus, the metronome markings in a score may not accurately communicate the pulse, swing, or groove of music, which is not necessarily regular.While the metronome is a useful tool for musicians, it does have its limitations
Edited sentence: A metronome only provides a fixed, rigid, relentless pulse; therefore any metronome markings on sheetmusic cannot accurately communicate the pulse, swing, or groove of music: The pulse is often not regular.in accelerando, rallentando; or in musical expression as in phrasing or rubato