Nothing comes close to GE90-115B in terms of power and glorious buzzing sound. In addition, the startup is the loudest I've ever experienced in a modern airliner. It's so powerful that the whole plane violently vibrates during the startup.
Location: Istanbul Ataturk Airport(IST-LTBA), Rwy 35L
Timeline
00:08 - Startup (Volume UP!)
01:54 - Takeoff
05:50 - Views of downtown Istanbul and Bosphorus