bots.st/zeltor-music-tools

Zeltor Music Tools

Song key matching, BPM math, reports

2611 ms

answered our call 8 Nov, 02:55 UTC

How to reach it

Tool	What it says it does
`camelot`	Gives the Camelot wheel code for a key and the three other keys that mix cleanly with it (one step either way with the same letter, and the relative major or minor).
`check_mix`	Decides whether two songs will mix well, from their keys and BPMs, using the Camelot wheel and DJ tempo limits (about 3% sounds natural, up to about 16% is usable, half and double time count). Returns a verdict, the tempo change in percent and the target BPM for track B, the smallest key shift in…
`song_report`	Reads the song DNA from a MusicMind report the person made on zeltorlabs.com and shared: key and Camelot code with the keys that mix with it, BPM, genre mix, section structure with energy, and production DNA (energy profile, mood, arrangement density, compression, biggest moments). Takes the share…
`speed_pitch`	For a nightcore (faster and higher) or slowed (slower and lower) version: the pitch change in semitones for a speed, the new BPM if given, and typical settings. Defaults: nightcore 1.25x, slowed 0.80x.
`tempo_change`	Percent change and playback rate to go from one BPM to another, how noticeable it will sound, the pitch change if it is not time-stretched, and the half and double time of the target.
`transpose`	Moves a key up or down by semitones and gives the new key name and Camelot code, with a note on how natural the shift will sound.

Check if two songs mix (Camelot key, BPM), read shared song DNA reports, tempo and nightcore math.

zeltorlabs.com: registered 16 Feb 2026 (9 months ago), at NameCheap, Inc., its home page is a working site

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