My piano teacher says that music without voice is a piece, and music with a voice is a song. Should I listen to them, or are they just being pedantic?
'piece' is usually when talking about classical music. other types of instrumental music might be called different things. for a video game, it might be called a 'track.' if it's in a movie, it might be called the 'score.' if it is at a construction site it might be called a 'jackhammer'. but it is important to remember that you can call anything anything. in england they call the door the tv or something, and in america they measure everything with their hands and feet. it's good to be flexible, and creative, with language. it will all change in 100 years anyway