Hope you don’t mind another suggestion.
I wouldn’t approach the test that way at all. Don’t go back and forth between cables after only one song each. You know the sound of your system. Listen with the old cables for AT LEAST one entire record. Then, the same entire record record with the new cable (ideally, live with the new cables for a couple of days). THEN go back to the old cable. The differences will be much more apparent this way. Just one man’s opinion. Yes, good luck and have fun.
I wouldn’t approach the test that way at all. Don’t go back and forth between cables after only one song each. You know the sound of your system. Listen with the old cables for AT LEAST one entire record. Then, the same entire record record with the new cable (ideally, live with the new cables for a couple of days). THEN go back to the old cable. The differences will be much more apparent this way. Just one man’s opinion. Yes, good luck and have fun.