Upon picking up the virtual guitar, you are presented with a circle ... Essentially, an Eb (pronounced E Flat) major chord is sonically the same exact thing as a D# (pronounced D sharp) major ...
This would make a major 7th chord. For a regular 7th chord, we need root, 3rd, 5th and b7 – but to say 'a flat 7' would be too ... this voicing has the root (E) on the sixth, then the 5th ...