Originally, this musical release was indended to be a plate with four songs machined into it on a lathe. But due to a critical failure in the diamond lathe needle, accompanied by a crippling worldwide diamond shortage, the plant had to close its doors. The only alternative was to implement a different medium for the circulation of the songs, and with Electric Voice having spares of an appropriate length and width of spooled magnetic tape, the songs were painstakingly and faithfully transferred to a limited number of musicassettes. Both side A and side B contain the same material, and can be operated in most modern cassette players. You can purchase it here:
http://www.electricvoicerecords.com/catalog/
