I still remember when we sang this song at our Kiel Jam on the pier. ´twas fun. But when you see this video you get an idea where you can push the banjo to - if you really want to. I´ll practice.. And yes, this is Allison de Groot from Oh My Darling on banjo. I think it´s double C tuning (with capo up two frets, so the song is in D).