What is the difference between mordents and trills?

Mordents and trills are both musical ornaments that involve the rapid alternation of two notes. However, there are some key differences between the two.

* Mordents are typically played on a single note, while trills can be played on two or more notes.

* Mordents are always played with the main note followed by the ornamenting note, while trills can be played in either direction.

* Mordents are typically shorter than trills, and they usually have a more pronounced "bite" to them.

Here are some examples of mordents and trills:

Mordent:

Trill:

In general, mordents are used to add a bit of embellishment to a melody, while trills are used to create a more sustained, vibrant sound.