From 1987 onwards Zappa turned his attention more and more to the large tape vault at the cellars of his house in Los Angeles with all the live recordings and unreleased studio tracks. He had the habit of changing his compositions a little and sometimes drastically for each tour and even during a tour. So the tape vault contained a large collection of different versions or "covers" of his music. Some of it had already appeared in the first half of the eighties: a third of "Tinsel town rebellion", "Baby snakes" and most of "Does humor belong in music" (1985) consisted of such recordings. Now he set off to compile a six double CD series from the tapes called "You can't do that on stage anymore" (YCDTOSA), released during the period 1988-1992.
This series, as well as the bootleg albums, show that Zappa didn't write most of his
material with a specific album in mind. Some of the bootlegs were "officially" released in
limited supply as the "Beat the boots" series of 1991/2 to spoil the bootleg market (see the
left menu). The compositions were added to a pool of unreleased compositions, from which from time to time the albums were extracted. Many songs were part of the concert program for some time, before they appeared on album.
| Title | Released | Date of the tracks |
|---|---|---|
| - Baby snakes (DVD/CD) | 1979/1983 | 1977 |
| - The dub room special (DVD/CD) | 1984 | 1974/1981 |
|
- Does humor belong in music (CD/DVD) | 1985 | 1984 |
| - YCDTOSA, Vol. I | 1988 | 1969-1984 |
| - YCDTOSA, Vol. II | 1988 | 1974 |
| - YCDTOSA, Vol. III | 1989 | |
| disc 1 | 1982-1984 | |
| disc 2 | 1971-1984 | |
| - YCDTOSA, Vol. IV | 1991 | 1969-1988 |
|
- The best band you never heard before in your life | 1991 | 1988 |
| - Make a jazz noise here | 1991 | 1988 |
| - YCDTOSA, Vol. V | 1992 | |
| disc 1 | 1965-1969 | |
| disc 2 | 1982 | |
| - YCDTOSA, Vol. VI | 1992 | 1970-1988 |
| - Playground psychotics | 1992 | 1971 |
| - Ahead of their time | 1993 | 1968 |
| - ZFT: FZ:OZ | 2002 | 1976 |
| - ZFT: Halloween (audio DVD) | 2003 | 1978 |
| - ZFT: Imaginary diseases | 2006 | 1972 |
| - ZFT: Buffalo | 2007 | 1980 |
| - ZFT: Wazoo | 2007 | 1972 |
| - The torture never stops (DVD) | 2008 | 1981 |