You can access the Compositions Browser by clicking the navigation icon  , then Compositions. You will see the compositions in your library displayed in a screen something like this: You can choose to only display Classical compositions by setting the slider toggle at the top right of the display to "on". The column headings in the Compositions Browser are customizable. Click the down arrow on the right of the header bar to reveal the list of available headings, and set those you want using the slider toggles.

Many column headers also have sort order controls (the arrow icons) or text filter controls (the funnel icon). As for the other browsers, there is also a Focus button that can be used for advanced filtering. The Focus criteria here are relevant for Compositions.

Clicking a Focus button will reveal the possible choices for that category. If there is more than one page, the pop-up window is scrollable, and will also have a Filter field for quick access to the desired choice(s). Here, for example is the pop-up window for musical forms in this particular library. Note that the content is ordered by frequency, with the most used forms listed first.

Focus is a powerful feature that allows slicing and dicing your collection in many different ways. It's covered here, but the best way to learn about it is really to dive in and try it. Once you have built a dynamic filter using Focus, you can save it as a Bookmark  for instant recall later. Next to the Focus button are the Favorites filter button and the Focus on Tags button . Next to the Bookmark icon at the top right is the Search icon , which searches across the whole of Roon.