I'm going to sound a bit silly trying to describe this piece but I heard it on the classical channel and can't get it out of my head. It starts high and light, with wind instruments. There are two staccato notes played together over and over again at the start (very high notes). One of the wind instruments is probably a flute. There's a motif (?) later on in the piece that sounds sort of blues like, that reminded my friend of Gershwin. The key won't be accurate but it sounded like C, D, A flat, G, F. I think it ends quite heavy not like the start which is very light. We thought it might be Ravel but high chance we are wrong.
My best guess is you're looking for Ravel's Bolero, one of my all-time favorite pieces of music.
It starts out light, with wind instruments, and ends up heavy, has a bluesy riff a bit reminiscent of Gershwin, has a repeated motif of two staccato notes, and is indeed by Ravel, so I'm pretty confident on this ID.