csv file information performers: age,flute experience, gap in experience *some people don't include "gap" in their years of "flute_experience".
evaluator: number of participation, flute experience
sounds: sound_ID, file_name, performer About the sound_ID n: nomal bm: bigger mouth sm: smaller mouth bu: breath upward bd: breath downward
sounds_evaluation: sound_ID, evaluator, sound_evaluation About the evaluation values 1: Below beginner level. Seen as just starting level. 2:Beginner level. There are some areas that need improvement. 3: Intermediate level. Some improvement is needed. In general, the student's performance is satisfactory. 4: Intermediate to advanced level. There are some points to be improved, but the performance is acceptable for an amateur concert. 5: Advanced level. There is nothing to be improved at all.