# Zeltor Labs (zeltorlabs.com)

Compares two audio tracks' key and tempo in the browser and reports whether they mix.

- Atlas card: https://inite.ai/en/atlas/zeltorlabs.com
- Site: https://zeltorlabs.com
- For: DJs, producers and mashup makers checking whether two songs mix in a set or DAW
- Categories: analytics
- Use not measured/100 · alive 100/100

## Used for

- check whether two songs share a key and tempo
- find the tempo or key change needed to mix two tracks
- preview a mashup before opening it in a DAW

## Price

- from 4 USD/one-time, free plan (read 2026-10-31 on https://zeltorlabs.com/pricing)

## For developers

- OpenAPI: https://zeltorlabs.com/openapi.json (6 paths)
- MCP server: com.zeltorlabs/music-tools (namespace; open on 2026-10-31, 6 tools)
- Read 2026-10-31

## MCP server, measured daily

Server: https://zeltorlabs.com/mcp, checked every day since 2026-10-31 (2 checks).

- Answered: measuring, 2 daily checks so far
- Median first answer: 156 ms
- Sign-in: none
- Context its tool definitions take: about 1047 tokens (6 tools)
- Tool definitions: A, 100/100
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-31

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Source: INITE Atlas, https://inite.ai/en/atlas/zeltorlabs.com. JSON: https://inite.ai/api/atlas/zeltorlabs.com. MCP: https://inite.ai/api/mcp (atlas_lookup).