Why do they always use great hit songs for t.v. commercials and commercials for upcoming movies?

They hope that you have positive connotations towards that song and hope that will spur you to see the movie, you will relate that song/mood with the movie.

The song also carries baggage of emotions. If they want to make you feel lonely during a part of a movie, playing a song that you already know which conveys that is an easy way to do it.

It’s called advertising. Bad movies usually consist of good songs so you’ll remember the trailer. Movies that studios have faith in tend to have real scores, because the movie alone is interesting.

@rockfan Agreed. The unoriginal movies rely on good songs. Lol.

Oftentimes the soundtrack generates the entire mood of the movie, so they think that by playing a song you love, you’ll look upon the movie itself more favorably – or at the very least, it will have caught your attention.
I notice that car commercials tend to use less well-known artists. M. Ward, most recently.

anyone else notice in Suckerpunch that when they played the Eurythmics – Sweet Dreams (Are Made Of This) they were droppin’ Babydoll off at the Lennox House?