This document discusses guitar fretboard notes and intervals. It explains that the 4th string is tuned to RE and the distance between frets is a semitone. As you move up the fretboard, the notes follow the pattern RE#>MI>FA>FA#>SOL>SOL#>LA>LA# and so on. It provides an exercise to play a short repeating fragment ("obstinat") from the song "Peter Gunn" that follows the notes MI>MI>FA#>MI>SOL>MI>LA>SOL#.