Violin typically are lower in pitch than the G-string; these strings are usually tuned to C, F, and B. If the instrument's playing length, or string length from nut to bridge, is equal to that of an ordinary full-scale violin; i.e., a bit less than , then it may be properly termed a violin. Some such instruments are somewhat longer and should be regarded as violas. Violins with five strings or more are typically used in jazz or folk music. Some custom-made instruments have extra strings which are not bowed, but which sound sympathetically, due to the vibrations of the bowed
The Well-Tuned Piano third, consider that 5:4 is equivalent to 386 cents () and 9:7 is equivalent to 435 cents (). This difference is audible to the listener by comparing the tuning for each pitch of the western chromatic scale with the chromatic scale used in "The Well-Tuned Piano". "The Well-Tuned Piano" is based on a pitch lattice of perfect fifths and harmonic sevenths. "The Well-Tuned Piano", being improvisatory in nature, as well as ever-changing, has no specific form. The closest a listener can come to understanding the structure of Young's piece is by studying the liner notes from the 1981 Gramavision recording.