Find harmonic tracks in Rekordbox.

With key analysis on and the Alphanumeric key display selected, Rekordbox's Traffic Light highlights tracks whose keys are compatible with the track on the deck you select, and Related Tracks lists records related to the loaded track by criteria such as key and BPM. The highlighting only rates the key relationship, so you still judge tempo, energy, and whether the two records belong together.

No. To mix in key, Rekordbox only needs its own key analysis, which it runs on the tracks in your collection. Set the key display format to Alphanumeric for Camelot style codes, turn on Traffic Light, and the highlighted tracks are your safe next picks. Mixed In Key is a separate analyzer that some DJs prefer for its key detection and Energy Level ratings, and it writes its results into the file tags, but it is not required for harmonic mixing.

Rekordbox highlights within the track list you have open, and Related Tracks searches one folder or playlist around one loaded deck at a time. Vibes' Find Compatible filters your entire library to mixable tempos and harmonically related keys at once, which is better for planning ahead. You can plan the harmonic run before the gig and export it back to Rekordbox.

No. Rekordbox's Alphanumeric key display and Vibes both use the Camelot layout, where compatible keys sit next to each other on the wheel or share a number with the other letter. Vibes places every track on the wheel so the safe and creative options are visible without any theory, and Rekordbox's Traffic Light highlighting gives you the same answer for the deck you are mixing out of.