Hello!
If you're only writing it in the code one time, and then you are using a loop, that'd be 3 words indeed! So technically that'd be okay!
I thought I'd mention though, we normally advice people to make a story that can be told in a single scene. One thousand words is actually much less than you'd think at first. So keep that in mind when planning your game!
And that's correct, either ambient or music :)