The music is "Adagio in D Minor", and probably cliche more because it's been used so much rather than because it was cliche when written. It was originally composed by John Murphy for the 2007 film Sunshine.

https://en.wikipedia.org/wiki/Sunshine:_Music_from_the_Motio...

Not sure if that's actually your question, but GLSL is the language https://en.m.wikipedia.org/wiki/OpenGL_Shading_Language

GLSL is the language.