Page History

Music Director #1

• User found the drag and drop interface to be intuitive and easily learnable, but isn't familiar with the fact that file start importing as soon as the mouse button is released. Instead, user searched for an "OK" button to start importing officially. This is a tradeoff we made to achieve more efficiency, but sacrifices some safety because the user may inadvertently drop the wrong file on the interface.

Learnability

• User recognized the play button beside the track right away
  Efficiency
  
• User's single click on the play button starts playing the track right away
  Safety
  
• If user clicked on play accidentally, a pause button appears in place of the play button to stop track

Learnability

• On the user-friendly interface, the user had some trouble locating the trash can because it was placed far away from the user's line of vision
• On the high-efficiency interface, User quickly found the "X" delete button beside the uploading album
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• High-efficiency interface requires very little mouse movement to reach the "X" button, whereas the user has to move the cursor all the way across the screen in the user-friendly version of the interface.
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• User prefers that the user-friendly interface gave a confirmation warning before deleting album

Learnability

• User found the both interfaces to be easy to understand in terms of what information is being displayed
• Both interfaces lack affordances in terms of what is editable and what isn't, user had to experiment by single clicking on the fields 
  Efficiency
  
• User liked how both interfaces showed all the album and track information on one screen
• User noted the directly editable fields are very convenient
  Safety
  
• User noted a mistake in adding the genre can be easily fixed by clicking the "x" beside the genre tag

• User was confused about how to "approve" the album on both interfaces because he did not associate approval with the "checkmark" button (learnability issue)
• Again, a tradeoff was made between efficiency and safety: single click on the "checkmark" button will approve the album immediately (efficiency). User prefers a confirmation message (safety).

Music Director #2

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Music Director #2

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Music Director #3

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• User found switching modes via the tabbed interface to be easy and intuitive (learnability)
• Single click on another tab switched the mode immediately (efficiency), and user noted he can easily switch back if he accidentally clicked on another tab (safety)

Learnability

• User struggled with understanding the "filter" button and what it means - he thought it brings up another "filter" window 
  Efficiency
  
• User did not like how selecting a genre from the drop down menu did not filter the genres right away
• Not efficient to require 2 user clicks every time a genre needs to be filtered
  Safety
  
• Requires user to confirm genre choice by explicitly clicking on "Filter", but user did not like this

Learnability

• User did not know how to sort the rows (no affordances offered to suggest that clicking on the header row sorts it)
• User noted that having an arrow displayed beside the header would really help to indicate the sort function
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• Single click on the head column sorts the table in descending order, second click sorts the table in ascending order. User thought this was convenient
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• User did not know how to "clear" the sort, but eventually just noted that he could just click on another head row to sort by another row instead

• User found the export button very quickly and no troubles with this task (learnability)
• User liked that the file started downloading right away without prompting him to confirm (efficiency versus safety)

Music Director #2

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Music Director #3

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"Elf"

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