The primary goal of harmonic mixing is to create a smooth transition between songs.
Songs in the same key do not generate a dissonant tone when mixed.
This technique enables DJs to create a harmonious and consonant mashup with any music genre.
[2][3] A commonly known method of using harmonic mixing is to detect the key signature of every music file in the DJ collection by using a piano.
[4] Modern methods include the use of AI, or simply looking the song up in an online database.