 The group's composition has been in a constant state of change since its inception, and its members have continuously experienced political oppression, including over 400 arrests and trials (approximately 400).Their albums have been seized by police and their concerts banned, but despite this Grup Yorum has been one of the top-selling groups in the history of Turkey.The band gave their 25th anniversary concert on 12 June 2010 in İnönü Stadium, home to sports club Beşiktaş J.K..