Discographies
- http://www.todotango.com/english/biblioteca/discografias/discografias.html - only some orchestras / singers
- http://www.tangodj.org/discographies.html other orchestras and singers, but only recording year displayed, i.e. no exact date and no matrice numbers
- http://www.tango.info/discographies - wide scope of performing artists, but data only CD track based
- http://www.geocities.jp/arturomkwd/ - lot of data, big html pages
- http://www.esnips.com/web/discografias/ - ?
- http://taniguchi.com.ar/index.html?cont=show78rpm
- http://www.amsterdamclubdetango.nl/discografie-tango-remi-kooij.html