Union of Soviet Composers
In the mid-1970s Gubaidulina founded "Astreja", a folk-instrument improvisation group with fellow composers Viktor Suslin and Vyacheslav Artyomov. In 1979, she was blacklisted as one of the "Khrennikov's Seven" at the Sixth Congress of the Union of Soviet Composers for unapproved participation in some festivals of Soviet music in the West.