THE IN-SEN SCALE, or INSEN SCALE or IN SEN SCALE depending on where you click out there on yonder internet is a five note Japanese scale that contains the following intervals: 1,b2,4,5,b7.
So essentially The Phrygian Mode without a 3rd or 6th.
THE IN-SEN SCALE is very similar to The Iwato scale, the only difference being THE IN-SEN SCALE has a perfect rather than diminished 5th.
The free guitar scale diagrams below lay out THE IN-SEN SCALE for you all over the neck and as the five interlocking positions that link together to let you play the scale any where on the neck in any key.
CLICK HERE FOR A FULL LIST OF ALL THE FREE GUITAR RESOURCES ON MY BLOG!