Girl Talk in a Box
        Take control of your favorite song
        
        Controls:
        
            -  mouse click - start playing from the clicked beat
            
 -  space - start and stop playing the song
            
 -  arrows - control song cursor velocity
            
 -  w/a/s/d - move the song cursor
            
 -  < > ? - controls the beat period 
            
 -  b - toggle between beats and tatums
            
 -  shift+key - bookmark a beat
            
 -  [/] - set loop points
        
 
        Things you can do:
             Try playing every other beat of a song by starting a song playing and then pressing the right arrow once.
             Try playing a song backwards by pressing the left arrow twice and clicking on a beat.
             Make a swing version of the song by switching to tatums (hit 'b') and setting the beat 
                 period to 150% (use the '>' key) and play every other tatum.
             Create a 'breakdown' and a drop by stopping the song on a beat and reducing the period to zero (via the < key).
                 start things back up by pressing '?' and up arrow simultaneously.
             You can move blocks around by dragging them.
             You can copy blocks with ctrl-c.