Eusebius Mandyczewski (Ukrainian: Євсевій Мандичевський Ėvsevij Mandyčevśkyj, Romanian: Eusebie Mandicevschi, 18 August 1857, Molodiya - 13 August 1929, Vienna) was a Ukrainian musicologist, composer, conductor, and teacher. He was an author of numerous musical works and is highly regarded within Austrian, Romanian and Ukrainian music circles.
Family and friends 
Eusebius Mandyczewski was born in the village of Molodiya (then Austria-Hungary; now Ukraine, Hlyboka Raion) on 18 August 1857. He was the eldest son of a Ukrainian Greek Orthodox priest, Vasyl' Mandychevs'ky. Eusibius had two brothers (Georgiy and Prof.Kostiantyn) and one sister (Kateryna). Kostiantyn was a secondary school teacher, member of the regional School Council and later Head of the Chernivtsi Library. Kateryna Mandychevs'ka was a school teacher. Georgiy was also a composer of choral music.
He finished his secondary studies at the upper school of Chernivtsi and simultaneously studied music under Sydir Vorobkevych. He began studies at the University of Chernivtsi, then moved to the Vienna Conservatory in 1875 and studied music history under Eduard Hanslick, music theory under Martin Gustav Nottebohm and Robert Fuchs. Beginning in 1879, he became a close and lifelong friend of Johannes Brahms and a prominent member of the 'Brahms circle' (who aided Brahms in teaching Gustav Jenner). Johannes Brahms supported the young composer and appointed him as curator of his estate.
From 1879 to 1881, Mandyczewski was the conductor of the Vienna Singakademie. From 1887 to 1929, he was the archivist and librarian of the Gesellschaft der Musikfreunde. In 1892 he became director of the Gesellschaft der Musikfreunde orchestra.
The decade 1887–97 saw the appearance of Mandyczewski’s work on the Schubert Gesamtausgabe. His name is particularly associated with the ten volumes of songs, which he edited meticulously, sometimes printing as many as three or four variants of individual songs; in recognition of his editorship he was awarded an honorary doctorate from the University of Leipzig in 1897. A gifted philologist as well as musician, he was widely respected both for his scholarship and for his generosity to inquiring scholars; Grove was indebted to him for his help in the writing of his book on Beethoven’s symphonies. Mandyczewski also brought out a second volume of Nottebohm’s Beethoveniana, a series of pioneering essays in Beethoven scholarship that had been partly published in series in the Musikalisches Wochenblatt and partly left in manuscript.
In 1897 he received an Honorary Doctorate from the University of Leipzig. Later, in 1897, he began teaching at the Vienna Conservatory as Professor of Music History and Musical Instruments. In 1916 he was made a Privy Councillor.
For many years in the early part of the century he was the Viennese correspondent to the Musical Times. He was joint editor of the Brahms Gesamtausgabe with Hans Gál, and organized the Schubert exhibition of 1922 and the International Schubert Congress (1928); this last function greatly overtaxed his strength, and he died before the proceedings of the congress were published.
Mandyczewski composed music to the words of poets such as Taras Shevchenko, Yurii Fedkovych, Vasile Alecsandri, Mihai Eminescu, Heinrich Heine. He arranged compositions based on many Ukrainian, Romanian, German, and Hungarian folk songs.
- Nottebohm MG, ed, 'Zweite Beethoveniana' (Leipzig, 1887, 2/1925)
- 'Namen- und Sachregister zu Nottebohms Beethoveniana und Zweite Beethoveniana' (Leipzig, 1888/R)
- ‘Beethoven’s Rondo in B für Pianoforte und Orchester’, SIMG, i (1899–1900), 250–306
- ‘Carl Czerny: Versuch einer richtigen Würdigung’, Deutsche Kunst- und Musikzeitung, xviii/23–4 (1891)
- ‘Goethes Gedichte in Franz Schuberts Werken’, Chronik des Wiener Goethe-Vereins, xi/112 (10 March 1897), 2–3
- ‘Franz Schubert: zur Erinnerung an seinen 100. Geburtstag’, Mitteilung Breitkopf & Härtel, xlviii (1907), 1609–10
- ‘Jägers Abendlied’, Die Musik, vi/7 (1907), 45–6
- 'Schubert-Pflege in der Gesellschaft der Musikfreunde’, Geschichte der k.k. Gesellschaft der Musikfreunde (Vienna, 1912)
- 'Drei Meister Autographe' (Vienna, 1923) [facs. of autographs of Beethoven, Schubert and Brahms]
- ‘Brahms’, ‘Bruckner’, ‘Pohl’, ‘Strauss, Johann, Vater’, ‘Strauss, Johann, Sohn’, ADB
- 'Ludwig van Beethovens Werke: vollständige kritisch durchgesehene überall berechtigte Ausgabe', 25th ser., nos.264–309 (Leipzig, 1887/R)
- 'Franz Schuberts Werke: kritisch durchgesehene Gesamtausgabe', 20th ser., i–x (Leipzig, 1895–7/R) and Revisionsbericht (Leipzig, 1897/R)
- Antonio Caldara: 'Kirchenwerke', DTÖ, xxvi, Jg.xii/2 (1906/R)
- 'Joseph Haydns Werke: erste kritische durchgesehene Gesamtausgabe', 16th ser., v–vii [Die Schöpfung and Die Jahreszeiten] (Leipzig, 1922)
- 'Johannes Brahms sämtliche Werke', xi–xxvi (Leipzig, 1926–7/R)
- 'A. Caldara: Kammermusik für Gesang', DTÖ, lxxv, Jg.xxxix (1932/R)
- E. Mandyczewski: Autobiographical notes (MS, A-Wgm)
- K. Geiringer: ‘Brahms im Briefwechsel mit Eusebius Mandyczewski’, ZMw, xv (1933), 337–70
- M.J.E. Brown: ‘Four Schubertians’, Essays on Schubert (London, 1966/R), 169–93
- V. Cosma: 'Muzicieni români: lexicon' (Bucharest, 1970) [with list of compositions and bibliography]
- M. Bejinariu: ‘Die Erinnerungen der Baronin Maria von Kulmer an Eusebius Mandyczewski’, SMw, xxxiv (1983), 85–109
- Peter Clive, Schubert and His World: A Biographical Dictionary, published 1997, 344pp, ISBN 0-19-816582-X, p.165
- Brown Maurice JE, 'Mandyczewski Eusebius' in The New Grove Dictionary of Music & Musicians
- Austrian Ministry of Education, Science and Culture, 'AEIOU Project', aeiou.iicm.tugraz.at/aeiou.encyclop.m/m089171.htm