Heavy Sky is a Turkish hard rock band established in Ankara by Batu Akdeniz, Çağlar Tongur and Hakan Kılıç at the end of 2012. At the end of 2013, Mehmet Öztürk joined the band as the bass guitarist; and they changed their name as "Heavy Sky", which also comes to mean the eventual shape of the band. Heavy Sky is planning to release their first studio albüm in 2015. Yet, their first single, Unbreakable, has also been released in 2014. Mixing and recording have been performed by Studio Mirage (Ayhan Aydın, Uğur Karaman, Bulut Gör). The single is mastered by worldwide known mastering engineering Ryan Smith who has co-worked with giants as AC/DC, Scorpions, Joe Bonamassa, Joe Satriani etc. The website design for Heavy Sky.