This piece is covered by the Omnibus Wind Ensemble on their album, "Music By Frank Zappa". Jon Henley describes this piece as "an interesting example of the building-up of sonority and dissonance over a simple chord progression."
As I recall, #7 is one of the scores you can buy from Barfko-Swill, and is not released in any other form than as sheet music. And I've assumed that this is the case with #6 too.
"No. 7" is a 2:14 minute piece that even had Bill Lantz stumped as to what it was. Well, it had him stumped for a full three minutes. Then he remembered, and I have confirmed, that it appears on the part of the Barfko Swill catalog called Frank Zappa's Music/Music parts flyer; the list of available scores. [...]
Has #7 ever been publicly performed by FZ or anyone? Bill thought not, but as his three-minute delay suggests, I think his mind is slipping, so I better ask. Is it (or #8 or #9) part of a piece we know (besides the Big Nose).
The OWE appears to make use of these scores and why not? Could this mean they will one day perform #8 or #9?
VARIOUS SHORT MUSICS:
M6 023 JUMBO GO AWAY INTERLUDE—Keyboards & Bass (1 Part)
M8 024 FEMBOT IN A WET T-SHIRT CONTEST—Keyboard
M7 025 #7—Keyboard
M8 026 #8—Keyboard
M9 027 #9—Keyboard
M9 028 #9—HarpWIND QUINTETS:
MQ 006 #6
MQ 001 Wind Quintet