Can you change the song info on an iPhone?

I synced my music from my pc to my iPhone, so I didn't buy the music from iTunes and some of the songs' artists and album covers are screwed up and I can't seem to find a way to change them

Well you can go to your itunes on your computer & click on the song you wanna change then click on the right of your mouse then you get options- click 'Get Info' then you can change the options right there, there should be tabs like 'Summary', 'Info', 'Video', etc. In that 'Get Info' window & you can adjust anything in those tabs