13. When a song is transposed by an accompanist can you sing it easily, or must you transpose it yourself mentally? 14. Does difference in timbre affect your ability to judge notes? 15. Have you a good memory for melodies? Must you think of a melody always in its correct key, or can you imagine it in any key? 16. Did you develop or improve your memory for pitch by practice? Is it hereditary? 17. Do you think of colors in connection with notes