Below is one of my favourite videos of all time, The Ross Sisters performing Solid Potato Salad from the 1944 MGM musical, Broadway Rhythm.  The Ross Sisters were a three-part harmony group, who combined singing with dance, acrobatics and contortionism.  The scenes of physical derring-do start around the one minute mark in the video.  Trust me, they’ll make your eyes water. Don’t try this at home folks…or in a Pilates class…