Volume changes in singles?

[mix-it-well]

Here are two examples:

YouTube - "HOLLYHOOD" Vawn feat Jazze Pha (1:25)
YouTube - young joc-coffe shop (starts low and gets really l lot louder at 2:20 ,get`s lower after that. parts in general are way louder compared to the hook)

Why have they made the volume change in the middle of the track?
They lowered it...why?
I mean I'm sure this wasn't an error or something ,so whats the deal with it?
I noticed this on a lof of singles lately.

Is it to keep listeners atention (they turn up the volume in the hook and hear it way louder than usually)
Any ideas?

[jdg]

seems like a gimick, makes you pay attention, tho

[mix-it-well]

It confuses me all the time.
I always think my speakers are broken or the cables aren`t plugged in correctly.

[Cellotron]

Kind of OT of the thread - but back in the early 90's a friend of mine concocted a game where we would watch videos on Yo MTV Raps with a stop watch and bet on long or short on how many seconds it would be before a rapper would put his hands up into the camera. Usually any long bet for over 15 seconds was a loser!

Amazing how some things never change.

Anyway - on that first vid seems like it's very possible that there the drop in the audio level was made in the transfer to computer or conversion to compressed video format. A better judgement would be gotten from a different source (hopefully higher res) than YouTube.

Best regards,
Steve Berson