This work is the equivalent of a summa of Bach's knowledge as a composer of liturgical music. It represents one of the pinnacles of Western music and contains choral fugues of all kinds. Sort of an "Art of Fugue" for church music, if you will.

Another choral fugue extravaganza.

Both of these quartets, and the 6th, feature fugues galore.

Both the 9th and Missa Solemnis feature some of the great choral fugues. Give it a listen and find out why.

Beethoven's 3rd has a huge fugue in the marcia funebre movement.

Great fugal finale in k387.

Again, a tremendous contrapuntal finale in symphony no. 41, the "Jupiter". No. 40 features counterpoint in the finale as well.

String quartet no 2 and the Souvenir de Florence feature fugue-based final movements.

The symphonic variations include a fugue based on the theme as the final variation.

Haydn gets into the act! Another fugal finale in symphony no. 95. Other symphonies by Haydn with fugal sections: No. 70, No. 40 (and some others I can't think of now).

24 preludes and fugues.

great fugue in the scherzo of the E Minor quartet.

Another of Bach's essays in fugue. The ricercar a 3 and ricercar a 6 are two of Bach's most complex fugues.