I think of the 11 chord as like the quintessential elevator music chord.
It's great though. And bloody hard to do without fingers of iron, there may be more fret buzz in this one than others because holding that chord is really a b*&%h, especially low on the fretboard. I played it different from the picture, same chord, though.
See the descriptions for the major and/or minor chord parts of the XRNI series for details about how this was recorded, etc. Cheers.
Edit: I've added a quick audio example, you can hear most of the chords and strumming rates, it's part of the rhythm guitar track from a song I did with these, should have added a little pitch bend, oh well. Shows that a little compression, some tube clarification, distortion and reverb can make these sound pretty good, eh? What I actually used (DSP in order): Renoise's bus compressor, Studio Devil's Virtual Tube Preamp (awesome piece of software), Boogex's "Picking Crunch" preset with its cab and reverb turned off (so only the amp), Renoise's cab sim with the "Boro Jazz" preset, bass and high freq attenuated, Renoise's mpReverb "Cathedral" setting with the wet set to 20%.
Note, you will need to EQ and compress these at a minimum to use them well – they're all raw direct input samples, so the (sometimes pretty bad) harmonics and such are still there. Treat them as what they are – raw input requiring some processing! Thanks, cheers.