I love to mix songs together and then upload it to Mixcloud. I use the Cross DJ android app. Some musics (especially older ones) beat is not on the grid, and the beat changes within one song. Here's a screenshot (watch the orange one which grid's not on the beat). https://ibb.co/cK9SKbH I read it online that warping the audio can solve this problem. Ableton live has this feature, but I don't have pc. So I need a solution for android.