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# Beat-matching two songs

djay's sophisticated on-the-fly beat and tempo detection allows you to easily match two songs for a perfect transition. Through analyzing a song when it is first loaded, djay detects the speed (BPM) of the song and the precise locations of each beat.
To synchronize and beat-match two songs

- Press the "Sync" button of the turntable you wish to match to the other turntable.

When pressing the "Sync" button, djay matches the tempo (BPM) of one song to the other and aligns the beats so the songs play perfectly in sync.
Note: Some songs may be shifted by 1/2 or 1 beat. Therefore, after pressing "Sync" for the first time, pressing "Sync" again will shift the song by 1/2 beat each time, which allows you to re-align the beats.
Fine-tuning two beat-matched songs
When two songs go slightly out of sync you can bring them back to equal pace by using djay's Pitch-Bend feature, which allows you to temporarily speed up or slow down the turntable's speed without changing its current master speed.
To slightly speed up or slow down a song:

- Hold the + or - button next to the speed slider.

djay makes it easy to analyze your entire library in the background. This can be a useful tool especially before live performances.
Learn more about analyzing your library