sentences:  Here, the span was defined as including peripheral input.Participants were allowed to choose their own performing speed for each piece, introducing a layer of uncertainty into the interpretation of the results.Sloboda reported that there was a tendency for the span to coincide with the musical phrasing, so that 'a boundary just beyond the average span "stretches" the span, and a boundary just before the average "contracts" it' (as reported in Sloboda 1985