[quote name='Dad3353' timestamp='1494348923' post='3295247']
I'm not certain, but it seemed to me to be much like the football league, where each extract has to be pitted against each of the others. As, then, there are eight samples, each has to be played seven times (once against each of the others...), so twenty-eight plays in all. A 'league table' can then be drawn up, which would give some idea of 'difficulty'. May be wrong, though.
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Oh yes, totally agree. It's just that in each "fixture" you HAVE to listen to all of Sting and all of Flea (or whoever it is) every time, even though we know Flea is "harder" than Sting. Once you've heard a few notes of the Seven Days line, you know what it's going to be.