I have audited the Dutch release of Moulin Rouge!. It was a real pain in the ^%$ to sort out the music credits. The music credits were all over the place (other localities and regions as well) and for each song credited in the end credits I had to find out whether it was written for the film or not. I also came up to the following credits:

Additional Score by Person A
                            Person B
                            Person C

I left them out, but I'm not really sure. Should they be left out?

Furthermore, when a song written for the film has the following credits:
Music by Person A, Lyrics by Person B.

Person A = Composer
Person B = Song Writer

I'm quite sure about the song writer, but does person A get a composer or songwriter credit?

Quoting Corne:

Quote:
I have audited the Dutch release of Moulin Rouge!. It was a real pain in the ^%$ to sort out the music credits. The music credits were all over the place (other localities and regions as well) and for each song credited in the end credits I had to find out whether it was written for the film or not. I also came up to the following credits:

Additional Score by Person A
                            Person B
                            Person C

I left them out, but I'm not really sure. Should they be left out?

It's correct to leave them. Is there a credit for the main score?

Quote:

Furthermore, when a song written for the film has the following credits:
Music by Person A, Lyrics by Person B.

Person A = Composer
Person B = Song Writer

I'm quite sure about the song writer, but does person A get a composer or songwriter credit?

Person A as well as B get songwriter credits.

EDIT: Actually they only get the songwriter credit if the song is original to (specifically written for) the film.

I didn't think there were any original songs in MR? Only cover versions?!

Most songs are indeed covers, but a few aren't.

Actually There Was a Boy wasn't new, it's actually titled Nature Boy and is from 1947: http://en.wikipedia.org/wiki/Nature_Boy

But the following songs are:
Zidler's Rap by Baz Luhrmann, Craig Pearce and Marius De Vries [Marius DeVries]
Meet Me in the Red Room by Marius De Vries [Marius DeVries] and Amiel Daemion
Gorecki by Andrew Barlow and Louise Rhodes
Come What May by David Baerwald
Le Tango du Moulin Rouge by Marianito Mores, Baz Luhrmann and Craig Pearce
Fool to Believe by Baz Luhrmann, Craig Pearce, Marius De Vries [Marius DeVries] and Craig Armstrong
The Hindi by Steve Sharples

Quoting T!M:

Quote:
Yeah, researching which songs are "original" and which aren't is a tedious chore. I've spend quite a bit of time on that, and you'd be surprised how many films have at least one original song in it - I'd guess that at least half of the profiles in our database needs one or more "song writer" credits. Generally though, only the EXTREMELY obvious ones (think: Ray Parker, Jr.'s 'Ghostbusters') are listed in our database - there's a lot of work still to be done there.

Songs in musical/music films are mostly well documented and easy to find on the net, but due to the amount of songs it's a tough and time consuming job. No copyright notices at the end of a song credit is an indication that it's likely written for the film, but as always there are exceptions.