Russian guitar usually differs from the wood in the rest of the neck. The neck joint or heel is the point at which the neck is attached to the body of the guitar. The fingerboard is made of hardwood (ebony or rosewood are common), fitted with metal frets of brass or steel. Fret spacing almost always follows the western twelve tone equal temperament (12-tet) system. The surface of the fingerboard may be flat or curved slightly ("radiused"), although the curve on the Russian guitar is usually somewhat less than that of an equivalent western 6-string guitar. Inlayed position markers are common, and
That's What That's What That's What is one of the more idiosyncratic releases by solo steel-string guitar artist Leo Kottke. It is distinctive in its jazzy nature and "talking" songs ("Buzzby" and "Husbandry"). It reached #24 on Billboard's Top New Age Albums charts, Kottke's highest charting position on Billboard. The song "Little Snoozer" is played on a Charvel demo model of a Danelectro 6-string bass guitar tuned one octave lower than a standard 6-string guitar. Kottke has re-recorded at least two more versions of "Jesus Maria". The Allmusic of the album stated "Leo Kottke has always been a highly idiosyncratic guitar player