Articulation is different ways of expressing a note by changing how the note sounds. You can change how the note sounds by shortening it, extending it or playing it louder.
On the right are examples of different types of articulation, alongside the length and the symbol.
This is Mozarts Turkish March (also known as rondo alla turca). In bars 4-7 the staccato is very important to the music to contrast to the previous few bars.
Articulation is very useful because it the performer knows what articulation to play on a certain note. Without articulation, it would be very
the music would be very boring because every note would sound the same and there would be no variation.