Features of the flute vocal range   The flute range is wide and high, flexible skills, soft and quiet, that is, can play bright and cheerful melody, and can play melancholy melody, is the most flexible playing of the wooden pipe instruments. Vibrato is essential in flute playing, and it is used to express the emotion, connotation, and play a role in displaying the rich appeal. Just like when a singer sings a song, such as no beautiful trebrato, can not express the thoughts and emotion and the profound connotation of the music, nor can it have a rich appeal, the same is true in the performance of musical instruments.