The Jonas Brother's write there own songs. A lot of them.
Actually they all compose their own songs. Nick especially as he's the one who's always full of ideas for their songs.
Someone who composes, or puts together, music.
Both Claude Debussy and Hector Berlioz were born in France and were Romantic Era composers.
The lyrics were by Ned Washington, the music by Bronislaw Kaper and Walter Jurmann. The song was featured in the Marx Brothers film "A Night at the Opera" and sung by Allan Jones.