Mr. Oyen..
Yes, Tim McIlrath writes their songs.
He is a rapper that is fairly prominent on Youtube. He tries to change songs into showing a more positive side with his lyrics. He writes his own songs or takes other peoples songs and change them to be more positive in their message.
Dappy is the person who usually comes up with the hooks / chorus and Tulisa and Fazer put their verses in aorund it but sometimes the roles change but N-Dubz love writing their own stuff.
A composer is a person who writes music.
Yes, "songwriter" is a common noun. It refers to a person who writes songs, and it does not denote a specific individual or entity. Common nouns are general terms for a class of objects or people, unlike proper nouns, which name specific individuals or entities.
A lot.
Cody writes and co-writes all of his songs himself.
Ruki writes the lyrics of the GazettE songs ;P
lets g0-neyo
Blake Shelton typically writes his own songs.
Taylor actually writes her songs herself! She either wrote or co-wrote all of her songs. Sometimes Liz Rose writes her songs and Taylor co-writes.
People in their team write their songs but no one from mindless behavior writes their songs.
Nobody, Eminem writes his own songs, he even writes his own freestyles!
Chris writes his own music. (all of his songs in other words)
Yes, he writes and co-writes all his songs by himself.
Nickelback write their own songs.
Weezer's songs are the songs that Weezer writes and performs.