User: 20 year old male, little to no music experience. Statistics major

Tasks performed:

1. Add a musician:

   • User went directly to the drop down menu and button.

2. Begin playing:

   • Directly to play button, no problem.

3. Pause/Stop:

   • Believed red 'X' was a stop button at first, then used the pause button.

4. Delete a musician:

   • See above, red 'X' was confusing. After initial confusion, user correctly deleted a musician using the 'X'.

5. Adjust musician parameters:

   • Had to be told that musicians are draggable.
   • Was not certain why musicians appeared where they did (random)

At this point, the user added several more musicians and began arranging them to produce some vaguely interesting music.

1. Change tempo:

   • Used tempo slider, did not try the text line.
   • Worked fine, other than the reported bug of tempo not increasing beyond ~120

2. Change key:

   • Assumed that unchecked minor box implied a major key

     • (should this be explicit somehow?)

   • Was able to change key using drop down menu and hear the changes

3. Change time signature:

   • Had to explain what 'beats per bar' meant. In explaining, I used the metronome musician to demonstrate when bars ended/began.

4. Quit application:

   • Closed the window, which correctly closes the program.

Overall impressions:

• Looks nice.
• Vaguely understood difference between energy/complexity, and how to effect change.
• Sound, although fairly primitive, can be used to create interesting beats/music.
• Too many musicians in drop down menu, wanted a simpler setup

Had to be told:

• Musicians are movable. (Didn't have to say how)
• Beats per bar description.
• Do not have to pause in order to change status

  • includes adding/removing musicians,
  • changing key/tempo, beats per bar

Guessed:

• If 'minor' checkbox unchecked, then key is major

Mistakes:

• Red 'X' looks like stop button

  • After seeing it wasn't a stop button, correctly used it to delete musicians