Changing 2 minutes of music into 4 minutes is playing at -2 times the speed. The methods of accelerating music playback are as follows:

1. Open the home screen of the mobile phone and click to enter cool dog music;

2. Go to the homepage of Cool Dog Music and select a song you want to experience. Any song is ok.

3. Next, click the song played below to enter the playing page;

4. After completing the previous step, you see a multiple on the right side of the playback progress bar, and click;

5. The multiples of general songs are normal. If you want to experience the feeling of slowness, slide the circle to the left;