>>92177716The distortion is there because of the mixing of the track done by whoever is doing the final mix. Its not because mixerkun sucks but what he has to work with. Most of the time for collab duets, it's not done with both people together in the same studio at the same time. Each singer usually records in separate studios and sends their track to be mixed together with the other one. There will always be issues like syncing timing and pitch between the two tracks. It is also likely that the tracks used are not done as a single once through recording by each singer, since neither will know how long to pause between each verse to let the other person finish their verse. You can also tell that each verse is from a separate recording track by the missing breathing sounds that a person will naturally make when recovering from the end of a verse. Audio quality wise, just don't expect these mixes to be as good as a well recorded from start to finish live performance one. Just enjoy the track for what it is, a fund a bubbly collab between two talented singers. If your searching for audio fidelity then enjoy the live recorded tracks like 自堕楽 - 尾丸ポルカ(cover). You can't always have your cake and eat it too.