'' Bırak Zaman Aksın '' ( " Let Time Flow " ) , their second album was released in January 1999 to massive success . Just after its release , Derin Esmer moved to the United States and was replaced by prominent guitarist Kerem Özyeğen . After the devastating 1999 Kocaeli earthquake , Mor ve Ötesi started playing more on social and political themes . They were also very active in the opposition against the use of nuclear energy in Turkey
1999 Kocaeli earthquake
1999 İzmit earthquake
Mor ve Ötesi