The only scene I remember is at the end the two guitarists are leaving I think the main characters apartment. They were music creators but I’m not sure it was like a band. I think after the end they went onto become really popular. I saw the film maybe between 10 years ago. I don’t think it is much older than when I’d seen it.
Could it be “Anvil: The Story of Anvil” (2008)?
Music & Lyrics? (Hugh Grant, Drew Barrymore)