On the banner you will see a tempo indication. Click on a portable stereo. You will hear a melody in a certain tempo. Click on the DJ that is playing the same tempo as indicated on the banner.
 





tempos: grave, largo, lento, adagio, larghetto, andante, andantino, allegretto, moderato, allegro moderato, allegro, allegro con spirito, allegro con fuoco, allegro assai, vivace, presto, prestissimo, veloce.