Exercises for articulation are some of the most enjoyable singing exercises. The first three exercises work the different articulators while maintaining a clear vowel tone. The other two exercises are called tongue twisters because the combinations of certain consonants are hard to manage when singing or speaking quickly. Many people have heard tongue twisters as children and laughed at how difficult and tangled the words can end up sounding. Practice these exercises slowly at first and then try to build up your speed.