World Voice Day, observed on April 16 every year, is a celebration of the phenomenon of voice. The day was first started in 1999 in Brazil by a group of voice professionals. Eventually, the observance spread to the rest of the world. Voice professionals are encouraged on this day to organise events highlighting the importance of the vocal cords in one's life. If you are something who is intrigued by the phenomenon of voice or are a voice artist yourself, know everything about this unique observance and why World Voice Day is celebrated every year.