Robert Rental :: mental detentions (1979)

Due to an info on wikipedia, about the electronic music pioneer Robert Rental (1952-2000) and attributed to Mutant Sounds blog, a previously unreleased demo tape from 1979 has quite recently surfaced on the net. The music cassette release was titled "Mental Detentions". 

A link to download the release can be found on mutant sounds.

:: mutant sounds
:: Robert Rental at wikipedia
:: discogs