The author has conducted a survey that rhythm and phrase recognition when classical music performers score based sight-read about jazz adlib solo. Classical music performer generally takes the 1st and 3rd quarter as accented beat when they perform 4/4 beat phrases. However the jazz performer generates their adlib phrases, taking the 2nd and 4th quarter as accented beat. Thus sight-reading the generated phrase for the classical music performers is difficult. In this paper, the author reports the survey that records the processes that the classical music performers sight-reading jazz blues adlib phrases, changing the accented beat, then considers based on the results.