Tango.info performance date

tango.info music performance date is the day the recorded performance was performed. In case multiple performances were mixed, it is the day the mixing took place.

If a recording is altered without mixing in other performances (or adding audio ? what is adding?) then the recording date stays, despite under the ISRC rules a new recording was created.

The format can be,

• any of the ISO 8601 conform formats:
  • YYYY, a year e.g. 1932
  • YYYY-MM, a month in a year, e.g. 1951-11
  • YYYY-MM-DD, a specific date, e.g. 1931-07-01
  • YYYY--YYYY, a range spanning at least from one year to another and including no specific month information, e.g. a) 1933--1934, b) 1933--1956
• one non ISO 8601 conform format:
  • YYYY|YYYY, two possible years combined with a "|" character symbolizing an "OR". To be used when there are three or more candidate years known from discographies and some could be excluded leaving only two years, and when these two years notated as a range YYYY--YYYY would include at least one year from a discography that could be excluded. E.g. 1959|1963.

tango.info tagger format string allows retrieving date information.