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If I feel like a little instrumental interlude and I'm at a loss where to go for it I will play the chords and walk the bass line. I think they call it boom chick, or boom chicka if you add an up stroke to the strum. There are tons of youtube videos demonstrating the technique. Just alternating plucking the I and the V between strums is all it is. Some songs it comes out pretty good in fact. Some not so well, but I've done it long enough that I have a feel for it.