I'm trying to write/arrange songs in the style of the Blues Brothers. It seems that some of the arrangements were very simple. In the case of "everybody needs somebody to love" for example, they just increase the beat and added a rap dialog at the beginning. In other cases, like the song "Funky Broadway", are more complex and it looks almost like a new song, and it's merged with "Soul finger". Also it seems they were always avoiding 12-bar blues songs, with some exceptions like "Sweet Home Chicago" I think. could someone enlighten me more on the type of arrangements they were doing, so that this can help me in my attempt to create something new with similar style and vibe?