Huh. Sometimes it plays a song, citing as a reason that it's got "Major Key Tonality" and other songs because they have "Minor Key Tonality". Now, given that those are really your only two options (I suppose it could have no tonality, but that would be an immensely boring song), how can it be using both as reasons? It'd be like TiVo suggesting things because they're B&W and other things because they're in color. In other words, "everything" is not a useful criterion, even if you specify it as two complementary sets.