This Festival is among the oldest Estonian music festivals with its centre in the historical Tallinn St Nicholas's Church since its beginning in 1987. St Nicholas's Church holds such unique treasures as fragments of the original painting "Dance macabre" (1466) by Bernt Notke, and also the main altar (1478-1481) made by another German master Hermen Rode. Organists and organ music friends have been increasingly interested in the Festival as there are unique old organs in different corners of Estonia, and have driven the organ music series to expand from Tallinn to the St Elizabeth's Church in Pärnu and also into several country churches. Here the well-known guest artists perform international organ music next to Estonian one, taking it to their next concerts elsewhere. In addition to orchestras and choirs also folk singers, jazz artists, Estonian early music ensembles Vox Clamantis, Scandicus, Hortus Musicus as well as the Estonian National Male Choir, Estonian Dream Big Band, saxophonist Lembit Saarsalu and others have participated in the Festival. Organ Festival collaborates with Leigo Lake Music already for the many years. Concerts are transmitted live by radio Klassikaraadio. Very popular are the master courses and so-called "organ trips", taking us to interesting historical organs. The Festival works in cooperation with publishers of organ music.
The Tallinn festival has given birth to also other organ festivals as the ones in Saaremaa and Pärnu. Usually the Festival offers over 30 concerts all over Estonia. In 2004 it had the honour of opening a new organ in Pärnu and giving the first performance of Andres Uibo’s liturgical organ symphony “Then I saw…”. The Festival is organised by Eesti Kontsert, the Producer and Artistic Director is its initiator organist Andres Uibo.