Guitar It is flat on classical guitars and slightly curved crosswise on acoustic and electric guitars. The curvature of the fretboard is measured by the fretboard radius, which is the radius of a hypothetical circle of which the fretboard's surface constitutes a segment. The smaller the fretboard radius, the more noticeably curved the fretboard is. Most modern guitars feature a 12" neck radius, while older guitars from the 1960s and 1970s usually feature a 6-8" neck radius. Pinching a string against a fret on fretboard effectively shortens the vibrating length of the string, producing a higher pitch. Fretboards are most commonly
Rocksmith rectangles, matching the color of the guitar string(s) to be held down, move from the background to the foreground along numbered lanes reflecting the fret position. The notes turn 90 degrees at the moment that they should be strummed; additional markers are provided to help with timing of future notes. Additionally, the game shows an ideal position for the player's hand on the fretboard for the current segment of the song, moving this up and down as necessary. Lyrics to the song, if any, are shown in a karaoke-style under the background note pattern, but otherwise do not impact gameplay.