If you are looking for a free Kontakt library that specifically targets the sonic footprint of the Yamaha MONTAGE, the community standard is often associated with the collection (specifically their FM and Pad libraries) or specific user-created "Montage Expansion" packs found on platforms like Pianobook.
Once you have downloaded a legitimate, high-quality free sampler instrument, follow these steps to load it into Native Instruments Kontakt : yamaha montage kontakt library free download high quality
It's important to first understand what a "Yamaha Montage Kontakt library" actually implies. The Yamaha Montage is a hardware synthesizer and workstation. Its sound engine and internal libraries are proprietary formats designed for its own hardware, not to be directly loaded into Kontakt. Consequently, there is . If you are looking for a free Kontakt
The Yamaha MONTAGE is a hardware synthesizer. Its sounds are generated by a dedicated engine that combines samples (AWM2) and frequency modulation (FM-X). You cannot simply "download" the MONTAGE operating system to run inside your computer legally or functionally. Its sound engine and internal libraries are proprietary
GospelTec has offered a free Kontakt library (featuring the CFX Grand, JD800, and FM sounds) that is lightweight (~1GB) and CPU-friendly.
If you own or have access to a real Yamaha Montage, you can create your Kontakt library for personal use.
: Search for the Montage 3.5 or Synthage libraries. While they often have a cost, some developers offer limited-time free downloads or "lite" versions through affiliate channels.