What is something in music that resembles a plane (like in geometry) and suggests a sense of infinity?

Amritha: What is something in music that resembles a plane (like in geometry) and suggests a sense of infinity?
I am doing a project for geometry and we have to find shapes in the real world. My theme is music and I need to find a plane, but it has to suggest a sense of infinity because planes are infinite. Any suggestions?

Answers and Views:

Answer by pov
My first attempt just disappeared, so …
I like your idea and would suggest you may find something useful amongst these. They’re all by Miles Davis:

Gone, Gone, Gone, or Buzzard Song from Porgy and Bess; extracts here:

or All Blues (11 minutes so it seems infinite [!]) with its steady rhythm and chord progression:

or, if you haven’t already done so, you can join spotify.com and hear the whole tracks.

For the second time, I hope you enjoy the music even if it doesn’t fulfil your wish.