I Finally heard back from the IU Library and they have everything. There are 72 reels of tape from the masterclasses and performances that were given that week. Here's what I received:
"The library has numerous tapes from this event, and to hear them you would have to request that they be digitized and come in to the library to listen. The catalog record for the Tuba Symposium can be found here:
http://www.iucat.iu.edu/uhtbin/cgisirsi ... 46871315/9" target="_blank" target="_blank
Here's what it contains:
International Tuba Symposium-Workshop. [Sound recording]
International Tuba Symposium-Workshop (1st : 1973 Bloomington, Ind.)
Conference:
International Tuba Symposium-Workshop (1st : 1973 Bloomington, Ind.)
Title:
International Tuba Symposium-Workshop. [Sound recording]
Published/Produced:
[1973]
Physical description:
72 reels. 7 1/2 ips. stereo. 7 in.
Performer:
Various performers and panelists; Arnold Jacobs, lecturer.
Recording info.:
Recorded May 22-26, 1973, School of Music of Indiana University.
Notes:
Booklet including list of session panelists, concert and recital programs, list of registrants and daily schedule, bound as part 2.
Contents:
[v. 1-3] Session no. 1: "The tuba: ?-1900 Origin and purpose".
[v. 3-8] Session no. 2: "Breathing, breath control, and tone production".
[v. 9-12] Concert: Tuba ensemble concert:
Cook, Kenneth. Introduction and rondino.
Hastings, Ross. Little madrigal for big horns.
Presser, William. Serenadefor four tubas.
Jones, Roger. Duet for tubas from 21 distinctive duets for tubas.
Frank, Marcel G. Lyric poem for five tubas.
Payne, F.L. Tuba quartet (The condor)
Sousa-Weldon. Stars & stripes forever.
Handel-Self. Allegro from Water music.
Frackenpohl, A. Pop suite for barituba ensemble.
Nelhybel, Vaclav. Ludus for 3 tubas.
Iannaccone, Anthony. Four mythical sketches.
Albert, Thomas. Trio for tubas.
Ewazen, Eric. Devil septet for four tubas, piano and percussion.
Contents: (continued)
[v. 13-15] Sessions no. 4-5: "The tuba: 1900-1940Creation of an image"; "The tuba: 1940-1960 Doors are opened".
[v. 15-17] Session no. 10: "Methods and supplementary teaching materials".
[v. 18-20] Session no. 7: "Standard solo repertoire".
[v. 20-23] Session no. 8: "The tuba in recital".
Session no. 3: "Tuba ensemble".
[v. 25-27] Concert: Tuba recital, part 1: Bach, J.S. Suite no. 5 for unaccompanied cello.
Amato, Bruno. Two together.
Wilder, Alec. Suite no. 1 for French horn, tuba and piano.
Kraft, William. Encounters II for unaccompanied tuba.
Zonn, Paul. Divertimento no. 1.
[v. 28-30] Session no. 9: "New directions and techniques".
Contents: (continued)
[v. 31-33] Session no. 10: "The tuba in band and wind ensemble".
[v. 33-35] Session no.11: "The tuba in orchestra".
[v. 36-38] Session no. 12: "The tenor tuba".
[v. 38-41,49] Session no. 13: "Tuba design".
[v. 42-44] Concert: Tuba recital part 2:
Townsend, Douglas. Chamber concerto no. 2.
Downey, John. Tabu for tuba.
Hartley, W.S. Sonata for tuba and piano.
Witkin, Beatrice. Breath and sounds.
Ross, Walter. Midnight variations (for tuba and tape)
[v. 45-48] Session no. 14: "The tuba and the electronic studio"; Winsor, Bruce. Asleep in the deep.
Rogers, Bruce. Densities.
Syverud, S.L. Gargoyle.
Ott, Joseph. 11:11:73.
Downey, John. Afternoon's purple.
Contents: (continued)
[v. 50-52] Session no. 15: "The tuba in free lance".
[v. 53-54] Session no. 16: "The tuba in jazz".
[v. 55-57] Session no. 17:"The tuba in chamber music".
[v. 57-59] Session no. 18: "The voids in tubaliterature".
[v. 60-67] Session no. 19: Gala concert:
Schuller, Gunther. Five moods.
Ramsoe, Wilhelm. Quartet no. 4.
Etler, Alvin. Quintet for brass.
Bozza, Eugene. Sonatina.
[v. 68-71] T.U.B.A. business meeting.
[v. 72] Memorial to William J. Bell.
I think this is worth pursuing.
Roger