chord notation

Musicians use various kinds of chord names and symbols in different contexts, to represent musical chords. In most genres of popular music, including jazz, pop, and rock, a chord name and the corresponding symbol are typically composed of one or more of the following parts:

1. The root note (e.g., C).
2. The chord quality (e.g., major, maj, or M).
3. The number of an interval (e.g., seventh, or 7), or less often its full name or symbol (e.g., major seventh, maj7, or M7).
4. The altered fifth (e.g., sharp five, or 5).
5. An additional interval number (e.g., add 13 or add13), in added tone chords.

For instance, the name C augmented seventh, and the corresponding symbol C^aug7, or C⁺⁷, are both composed of parts 1, 2, and 3.