Spectrum: A Communicative Course in EnglishSpectrum: A Communicative Course in English is a six-level course which contains, for every level: A Student book A Workbook An Audio Program Audio Programs are as follows: 6 tapes for levels 1-4 5 tapes for levels 5-6 The makes a total of 34 tapes in the course. The first four tapes are for the Student Book, and the last two (or the last, in the case of levels 5-6) for thhe workbook.