Interpretation of chord symbols depends on the genre of music being played. In jazz from the bebop era or later, major and minor chords are typically realized as seventh chords even if only "C" or "Cm" appear in the chart. In jazz charts, seventh chords are often realized with upper extensions, such as the ninth, sharp eleventh, and thirteenth, even if the chart only indicates "A7". In jazz, the root and fifth are often omitted from chord voicings, except when there is a diminished fifth or an augmented fifth.