If you specifically need to discuss why Edirol HyperCanvas never got a native 64-bit version, you would write an original observation: “Despite user demand, Roland discontinued Edirol HyperCanvas before migrating it to 64-bit architecture, leaving jBridge or the commercial Sound Canvas VA as the only 64-bit GM2 options.”

Because the Edirol Hyper Canvas is a legacy product (originally released around 2003-2005), there is no official 64-bit installer provided by Roland/Edirol. The official software checks the Windows version and installer architecture and will refuse to run on a modern 64-bit system.

Extremely intuitive interface that doesn't require a steep learning curve.

Edirol Hyper Canvas remains a legendary "Swiss Army knife" for musicians seeking a lightweight, high-quality General MIDI 2 (GM2) sound source

Have you successfully migrated your old MIDI rig to 64-bit? Share your experience in the comments below or on the dedicated Roland Clan forums.