And of course if your input form gives the user any help when they are filling it out, then you can run in to a problem where users choose ABBA more often than Aerosmith or Argent, (more often than they would have), based just on how ABBA is presented first alphabetically.

I got around this issue by not giving any help; the user was presented with a form with blanks for five artist and song name pairs. Which resulted in a crazy amount of typos, which I fixed “by hand” using a pretty lame interface since I wasn’t a good enough programmer to create a better way in 1996. I spent a LOT of time correcting typos.