{"value"=>"<p>The bulk of this sub-series contains Schenker's study of thoroughbass, including notes, drafts, and books. The collected books include C.P.E. Bach's <span class=\"title\">Versuch über die wahre Art das Clavier zu spielen</span>, and what Schenker uniquely called J.S. Bach's \"Generalbassbüchlein.\" This latter work was taken from vol. 2 of Philipp Spitta's <span class=\"title\">Johann Sebastien Bach</span>, Appendix B, XII, pp. 913-960 (1st edition of vol. 2, 1880), and bound by Schenker as a single text. Schenker's word \"Generalbassbüchlein\" has been retained throughout to indentify this work.</p> <p>The sub-series also contains two handwritten drafts of texts by Schenker, \"Von der Stimmführung des Generalbasses\" and \"Kommentar zu Ph. E. Bachs <span class=\"title\">Versuch über die wahre Art das Clavier zu spielen</span>.\" The former text was originally intended by Schenker to be included in an earlier version of <span class=\"title\">Der freie Satz</span>, which itself was originally part of vol. 2 of Schenker's Kontrapunkt. The latter text was preparatory work for the former. Please refer to Appendix 1 of the Oster Collection, \"An early version of <span class=\"title\">Der freie Satz</span>.\"</p> <p>Additional items from Schenker's study of thoroughbass can be found in Box 40, Fol 27, which Salzer included with Hans Weisse's correspondence with Schenker. Other items in this sub-series are analyses of J.S. Bach's Geistlicher Lieder and miscellaneous notes. The Oster Collection currently houses one item from Mappe 6, a work on thoroughbass by Moriz Violin, \"Über das sogenannte Continuo: Ein Beitrag zur Lösung des Problems,\" Wien: Universal ed., 1911, and contains two typescripts by Ernst Oster of Schenker's \"Von der Stimmführung des Generalbasses\" and his \"Kommentar zu Ph. E. Bachs <span class=\"title\">Versuch über die wahre Art das Clavier zu spielen</span>.\"</p>"}