organ, composed in 1849 for the death anniversary of Franz Sailer. Missa solemnis (WAB 29) in B-flat minor, for mixed choir, soloists, orchestra and organ, composed in 1854 for Friedrich Mayer's installation. In Bruckner composed also a 58-bar sketch for the Kyrie of another Mass in E-flat major (WAB 139), intended for mixed choir, 2 oboes, 3 trombones, strings and organ. The similarity to Mozart's early Masses was possibly the reason why Bruckner broke off the composition of the Mass. A recording of the sketch using notation software can be heard on John Berky's website. Linz In the 1860s, after the end of Sechter's and Kitzler's tuition, Bruckner composed successively the three numbered Masses, No.1 in D minor, No. 2 in E minor and No. 3 in F minor. The Mass No. 1 (WAB 26), in D minor, composed in 1864, is scored for soloists, mixed choir, organ and orchestra. The Mass No. 2 (WAB 27), in E minor, composed in 1866 to celebrate the accomplishment of the construction of the Votive Chapel of the new cathedral of Linz, is scored for eight-voice mixed choir and a small group of wind instruments. The Mass No. 3 (WAB 28), in F minor, composed in 1868 and intended for a performance in the Hofkapelle, is scored for soloists, mixed choir, organ ad libitum and orchestra. This Mass, which was clearly meant for concert, rather than liturgical performance, is the only one of Bruckner's Masses in which the first line of the Gloria and of the Credo are set to music. The composition of the Mass in F minor may have been influenced by Schubert's late Mass No. 5 in A flat major and Mass No. 6 in E flat major. Vienna In 1875, during his stay in Vienna, Bruckner drafted an 18-bar sketch for the Introit of another requiem in D minor (WAB 141). The bass-ostinato of the fragment is similar to that of the "nullified" Symphony in D minor and the Te Deum. References Sources Further reading Robert Haas, Anton Bruckner, 2nd print (Reprint der Ausgabe Athenaion, Potsdam, 1934), Laaber Verlag, Regensburg, 1980. Uwe Harten, Anton Bruckner. Ein Handbuch. , Salzburg, 1996. . John Williamson, The Cambridge Companion to Bruckner, Cambridge University Press, Cambridge, 2004. Cornelis van Zwol, Anton Bruckner 1824-1896 - Leven en werken, uitg. Thoth, Bussum, Netherlands, 2012. Paul Hawkshaw, Anton Bruckner and the Austrian Choral Tradition in: Donna