The easiest system for DJs to incorporate harmonic mixing is the Camelot Wheel. This wheel shows you the strongest connections to make for each type of key. All you need to do is work out what key one track is, and then you can see which other keys will match well. There are potential keys Pay attention below ⬇️

𝐍𝐀𝐙𝐀𝐍𝐈𝐍  🎨💻🖼

                                                  
  𝗗𝗶𝗴𝗶𝘁𝗮𝗹 𝗔𝗿𝘁𝗶𝘀𝘁 𝗔𝗻𝗱 𝗔𝗜 𝗗𝗲𝘀𝗶𝗴𝗻𝗲𝗿

Another important thing to understand is how to correctly manage gain levels. This is one technical aspect of mixing that DJs often overlook. Sure, it's not the most glamorous or exciting part of DJIng, but it goes a long way in making you sound professional, and not blowing out the speakers.