When The Beatles recorded music in the 1960s, most of it was recorded with the mono mix in mind. The mono mixes are the true vision of the band, but with a few exceptions, only the stereo mixes are available for streaming. The complete mono mixes are only available now through the out-of-print cd and vinyl box sets. I believe that this should change. I think that all Beatles fans should have the right to listen to the band's music as it was intended.