Keller Williams has been known to and loved by his fans as a jam-band type artist. Most of his previous music is full of long instrumentals and is improvisational in style. Grass is a departure for this artist and it adds up to some good results. Williams delves into the bluegrass genre with the husband and wife duo called The Keels. What we all should expect is that the bluegrass that you are familiar with is not how Williams' bluegrass sounds; it is his own version of it. Supposedly to get the original sound of his guitar for this album, Williams used a 12-string guitar in which he had removed 4 of the strings. The man is nothing if not innovative. There are interesting covers of Pink Floyd's "Another Brick in the Wall", Beck's "Loser", Tom Petty's "Mary Jane's Last Dance", and "Breakdown" on the album. Listen with an open mind and you will find yourself enjoying this experiment for the most part.