For variants on the above use as initial consonants b, p, m, f, v, d, k, n, t, and l.
Exercise XI
TO DEVELOP THE USE OF THE LIPS AND UNDER JAW
When practising this exercise protrude the lips and raise them toward the nose as far as possible; also make an effort to enlarge and widen the nostrils. This exercise may be practised more quickly than the preceding, but never at the expense of clearness of vowel distinction. Carry the exercise higher or lower, and in different keys, to suit individual voices. With a slight initial accent sing each two-measure section smoothly as one phrase. Avoid accenting each separate vowel sound. To do so would produce a series of jerks.
After practising the above as written modify it as follows:
1. Bee-boo-boh-baw-bah.
2. Pee-poo-poh-paw-pah.
3. Mee-moo-moh-maw-mah.
4. Fee-foo-foh-faw-fah.
5. Vee-voo-voh-vaw-vah.
6. Dee-doo-doh-daw-dah.
7. Kee-koo-koh-kaw-kah.
8. Nee-noo-noh-naw-nah.
9. Tee-too-toh-taw-tah.
10. Lee-loo-loh-law-lah.