Seven-string guitar string is augmented with a high octave string. Many of McGuinn's notable guitar solos utilize the G string of the twelve-string guitar to perform the main melody, and therefore the Martin seven-string guitar was designed to achieve this extended range playing without the need for doubling all six of the guitar's strings. In 2010, Inox Guitars has created a mix of the Brazilian Viola caipira and the Russian semistrunka (семиструнка). This instrument has 2 bass strings (as the 6th and 7th strings of the semistrunka) and five treble courses (as the Viola caipira) and it is used in open tuning
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.