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The Art of the Vocalise - Part I edited by Elio Battaglia. For Tenor, Soprano. MGB. Softcover. 144 pages. Ricordi #RER2969. Published by Ricordi.
A critical-technical anthology for vocal study for Soprano and Tenor. In three parts: Part I (Preparatory Course), Part II (Course of Medium Difficulty), and Part III (Course of High Difficulty).