By Harry Pickens. For any C, Eb, Bb, bass instrument or voice. 29 exercises in aural awareness; concise and usable. Beginner, intermediate, advanced. Book. Published by Jamey Aebersold Jazz

Learn to Sing from Rock to Classic. By Tona De Brett. Schott. BOOK W/CD. Size 9.25x12 inches. 76 pages. Published by Schott.

(Pro Vocal Men's Edition Volume 34). By Billy Joel. Pro Vocal. Softcover with CD. 56 pages. Published by Hal Leonard

Aria Collections with Interpretations. Performed by Maria Callas. Vocal. Size 8.75x11.75 inches. 112 pages. Published by Ricordi.