11/8 is an ancient musical interval. This interval falls halfway in between two notes of standard 12edo tuning. From the perspective of a standard 12edo tuner, 11/8 is as out-of-tune as possible. Not only is 11/8 an acceptable note of ancient tradition and modern non-Western tradition, it sounds good to modern Western ears as well. This is because it comes from the harmonic series. A 12edo tuner is not made for harmonics. This is why it calls 11/8 out-of-tune. Limiting possible pitches to only 12edo excludes access to the harmonic series. The harmonic series is how the ear perceives music on an unconscious level. The harmonic series is how humans know what instrument is playing, whose voice is talking or sing, and the quality of tones and music.

While 11/8 is ancient, the Western standard of 12edo makes it seem modern. The midi standard makes 12edo simple while making other tunings less accessible. 11/8 is not on a standard piano or keyboard. For-profit companies like to offer modern proprietary software as a "solution" to experience ancient notes on a computer or keyboard. This is quite simply not acceptable. Everyone needs to have open access to ancient notes. We should not need to turn to modern proprietary software to experience notes that are millennia old. Instead, we should use FLO software.