15 Advanced Studies for Tuba are based on popular tuba orchestral excerpts by Holst, Elgar, Brahms, Bruckner, Dvorak, Wagner, Mahler, Sousa, Frank, Tchaikovsky, Mussorgsky, Rachmaninov, Verdi, Ravel and Berlioz. 
 

15 Advanced Studies for Tuba is listed on the Trinity Exam Syllabus for Tuba for Grades 6, 7 & 8.

This is the Bass Clef edition, the book is also available in Treble Clef for Brass Band players.
 

The Videos below are some of the studies played by Dave Kutz of the Netherlands Philharmonic Orchestra:

Study No. 2 - The Enigma Machine

Study No. 3 - ..and Brahms too…

Study no. 9 - Being Frank

Study No. 13 - Veni, Vedi, Verdi

Study No. 13 - A Waltz Unravelled