No one really knows. Each viewer has their own opinion.
Dream
INCEPTION
inception
It's a cliffhanger; no-one knows
No, the art of inception is a fictional concept. No one can get into anyone else's dreams - not even those who make claims about "dream walking." Dream invasion is a fantasy of science fiction.
The question seems to relate to the movie Inception, starring Leonardo DiCaprio. Inception is science fiction and has virtually no basis in the real science of dreaming and sleep research. People do not experience dreams within dreams within dreams, unless they are dreaming about the movie Inception. See attached link for further commentary.
That would depend on the dream. The mood or tone of each dream is unique to the dream. A "dream within a dream" is a fiction popularized by the film "Inception" and the earlier film "Paprika".
The song in the "Inception" trailer is called "Mind Heist" and it was composed by Zack Hemsey.
Dream is defined as a process which takes place in a mind which can effect the reality. It is well defined in the movie.
You don't need to buy it, you can dream it.
The Architect designs each level of the dream and teaches them to the dreamer who recreates them in the dreamscape.
Many soundtracks aren't in the order of their movie. It would actually be bad to have "Inception" in the right order because the tracks sounding similar (Dream is Collapsing, Dream Within A Dream, etc.) would be playing for a long time and "Time" would be spread out all over the soundtrack like little bits of it are in the film.