Sheet music is where musical notation is written. It is represents the melodic and rhythmic patterns a song or piece of music contain. Also on a sheet of music, indications on how to play the music will be noted. Things like, timing, speed, form and mood of which the music needs to be played. A person who can read music will be able to read this. Sometimes, once the music is learnt or in other cases, a student/person can immediately be able to read the notes to play on their specific instrument. This is definitely a learned skill and comes after years of tuition.