music". Steve Van Telejuice explains the "groove" as the point in this sense when he defines it as a point in a song or performance when "even the people who can't dance wanna feel like dancing..." due to the effect of the music. Bernard Coquelet argues that the "groove is the way an experienced musician will play a rhythm compared with the way it is written (or would be written)" by playing slightly "before or after the beat". Coquelet claims that the "notion of groove actually has to do with aesthetics and style"; "groove is an artistic element, that is to say human,...and "it will evolve depending on the harmonic context, the place in the song, the sound of the musician's instrument, and, in interaction with the groove of the other musicians", which he calls "collective" groove". Minute rhythmic variations by the rhythm section members such as the bass player can dramatically change the feel as a band plays a song, even for a simple singer-songwriter groove. Theoretical analysis UK musicologist Richard Middleton (1999) notes that while "the concept of groove" has "long [been] familiar in musicians' own usage", musicologists and theorists have only more recently begun to analyze this concept. Middleton states that a groove "... marks an understanding of rhythmic patterning that underlies its role in producing the characteristic rhythmic 'feel' of a piece". He notes that the "feel created by a repeating framework" is also modified with variations. "Groove", in terms of pattern-sequencing, is also known as "shuffle note"—where there is deviation from exact step positions. When the musical slang phrase "Being in the groove" is applied to a group of improvisers, this has been called "an advanced level of development for any improvisational music group", which is "equivalent to Bohm and Jaworski's descriptions of an evoked field", which systems dynamics scholars claim are "forces of unseen connection that directly influence our experience and behaviour". Peter Forrester and John Bailey argue that the "chances of achieving this higher level of playing" (i.e., attain a "groove") are improved when the musicians are "open to other's musical ideas", "finding ways of complementing other participant's musical ideas", and "taking risks with the music". Turry and Aigen cite Feld's definition of groove as "an intuitive sense of style as process, a perception of a cycle in motion, a form or organizing pattern being revealed, a recurrent clustering of elements through time".