This libre Soundfont is an alternate fixed version of Micasddsa4000's Jummbox Soundfont,
I, stgiga, fixed the pitch, OPL2 samples, modulators, and mappings, and also added Zandro Reveille's OPL3 drums (TheFatMan is part of the equation, including OPL2 booster drums too) (also William B. Santos's YM2612 and Piconica (free basic waveform synth tool of sorts) drums were used to boost the range again, followed by little-scale's and drunkenjesus's OPLL drums, resulting in a dr...
Beepbox and Jummbox are under the MIT license, and Zandro's OPL3 and OPL2 are under CC-BY-SA4, which is compatible with the MIT license. The William B. Santos stuff is Public Domain. OPLL stuff is libre. The Retro Player bank is under CC-BY 3.0.