Creating a chord progression

Hey, this might sound like a weird question, but how do you actually go about creating a chord progression? Is there some theory behind behind it, or is just what sounds/feels good? For example, if you've ever heard Satriani's 'Love Thing' (in key of E), the chord progression for the main riff is Bsus4/E B/E Amaj7/E Eadd9 so how would he have known to use those chords? I think it may be connected with scale degrees but I'm not sure. Any help would be great, many thanks.

Yes there is some theory behind it. That progression; Bsus4/E B/E Amaj7/E Eadd9 is a fancy V IV I progression in E. You normally would see it as I IV V but I'm not going to argue with Satriani.

New here and do not want to step on toes, but I'd send you to www.musictheory.net -- lessons the common chord progressions to learn more on chord progressions.

Just noticed something interesting about that progression. Satriani likes to use pitch axis -- notice how the slash chords carry the bass E along with the progression, i.e. a strong tonal center through out the progression.

Cool, many thanks, Malcolm I'll check it out. Welcome to the site! (soz if that sounded cheesy!)