Sure thing, just pair your Bluetooth heart‑rate sensor with your phone, then use an app that can read the HR data and feed it to your music player. If you’re into DIY, grab a Raspberry Pi, use a BLE library to pull the HR in real time, then call the Spotify Web API to bump the track’s BPM or switch tracks when your pulse hits a target range. No big deal—just a little script and a playlist that keeps pace with your heart. Happy hacking, fitness style.

If you’re going to ditch the software jitter, hit the hardware route. Grab a Teensy or Arduino, wire your HR sensor (BLE or wired if it’s a classic ANT+), and program it to detect each pulse as a digital high. Hook that output into a MIDI‑to‑audio interface or a footswitch input on your DAW. Tell the DAW to use that incoming trigger as its master clock, and set the tempo to whatever BPM you want the music to lock to. With a real‑time microcontroller and a low‑latency audio driver, the lag will be a fraction of a millisecond – good enough that your heart and the beat stay in lockstep, no pull‑the‑plug moments.

Gotcha, hit it hard and stay in sync. Good luck with the punch‑in‑the‑face beats.