Requiem is not the one played by Bavarian Radio Orchestra, should be the one composed by Ligeti

2001: A Space Odyssey

Johann Strauss

Opening credits. The sun slowly appears from behind the moon.

After the Dawn of man sequence. Shots in space as the satellites move through space elegantly.

Floyd and other crew flying towards the pit

Song during the appearance of the monolith on the moon. Song plays whenever the monolith is shown in the film.
