Uploaded June 2023 | Updated September 2026, 2 weeks ago

---

A look at the unique MXR M-129 Pitch Transposer from 1979.

Thanks to Tom for the loan!

Patreon for the music from my videos, the stems of the music from my videos, sample packs and monthly Q&As: patreon.com/AlexBallMusic

One thing I neglected to mention was the MXR brand was later aquired by Jim Dunlop who have kept it going since the late 80s.
jimdunlop.com/products/electronics/mxr

Tony Gambacurta's perspective on inventing the M-129 Pitch Transposer: digitonylab.com/Documents/The-MXR-model-129-131.pdf

Big Country discuss their use of it: muzines.co.uk/articles/country-life/8600

0:00 Intro Jam
0:48 Quick History
2:22 Demo 1: Foxxy Music
3:17 What is the MXR M-129?
6:11 Demo 2: Large Nation
7:16 What else?
7:55 Demo 3: Syn-Pitch
8:46 Famous Users
10:19 Possessor of a friendless ticker
11:07 What became of MXR?
12:25 Outro