Spectrum International School on Instagram: "🎶 “Everybody... yeah! Spectrum’s Back, Alright!” Yesterday, the whole of Astana was singing and dancing together — and we were proud to be part of it! 💛 @spectrum_is was delighted to be a partner of this incredible concert that brought a true musical celebration to our city. Huge thanks to our friends @astanaconcert.kz for organizing such a top-level event and to the legendary group @backstreetboys for delivering a show that captivated our students,