150 Rounds for Singing and Teaching by Edward Bolkavec and Judith Johnson. For Choral, Voice (COLLECTION). BH Kodaly. 104 pages. Boosey and Hawkes #M051808601. Published by Boosey and Hawkes

(The Beginner Singing Method). By Pam Wedgwood and Heidi Pegler. For Voice (Female voice; Male voice). Technique Musicianship; Vocal Collection. Faber Edition: It's Never Too Late. Adult Contemporary. Elementary; Late Elementary. Published by Faber Music