Romania: Madrigal Choral Ensemble

This cover is distinguished by the presence of an organ in the cachet/illustration, and in the postmark. The cover seems to have been produced by the Music-Lovers Study Circle of the Bucharest Philatelic Association. The postmark includes the dates 1965 and 1 October 1990. I am supposing that the cover was issued on the latter date. The cover celebrates the national choir of Romania, the National Chamber Choir. The ensemble was established in 1965 (or rather 1963 according to their website. The founding conductor was Constantine Marin. The cover marks the 25th anniversary of the choir.

The stamp on the cover is Romania Scott 3619, issued September 8, 1990, marking the Romanian-Chinese Philatelic Exhibition in Bucharest. No connection to the musical aspects of the cover other than the proximate dates of production/issue. The cover illustration shows a somewhat dated picture of the choral ensemble (notice the television camera at right) in their primary performance space, the George Enescu Hall in the Bucharest Athenaeum. That hall got commemorated in 2017 with its own mini-sheet of stamps that I have written about here. George Enescu instigated the building of the organ which was completed in 1939. This cover was a gift from Mark Jameson.

Here is the text included on the cover and a rough translation:
asociatia filatelistilor bucuresti
cercul bucur grupa muzica
corul madrigal
dirijor marin constantin
ziua internationala muzicii
25 ani de la debutul international al corului


the philatelist association bucharest
circle enjoy group music
the madrigal choir
conductor marine constantin
the international day of music
25 years since the international debut of the choir