After watching this, The Art of Tumbao Ep. 2 – The Etiquette of Yes & No: The Subtle Ritual of Cabeceo in Social Dance, I agree with Musa and say that in this day and age, we need to learn the art of approaching someone before asking for a dance. Keep in mind that rejections don't favour the experienced or inexperienced dancers. Every dancer gets rejected atleast once in their lifetime