Q: What goes the 11th harmonic sound like? I've been googling it but I can't find what is sounds like.
A: i'm not sure which is which, and whether the numbering you're looking for starts with 0 or 1, but here is the harmonic series, if you have a very low C (around 33hz). the next note is an octave up, (65) then the next G up (around 98) then another C (131), then something around E (around 178) that will wring perfectly in a chord with C (even better than standard E), then the next G (196) then something about halfway in between A and Bb (around 226??) (they are all getting closer together.) then C again (262) then something around D (294?) then another E which rings perfectly in harmony with C (327.5), then, this might be the one you're looking for, something that's like exactly halfway between E and G. so it will be somewhere between F and F#. 360.25. not good. then the next one is another clean G. then some more ugly in between ones. did we get to the one you want yet