At first glance, it’s easy to see that the team behind the Disco Dancer musical has addressed several factors to help leading man Arjun Tanwar do his job of dancing and singing live on stage. “The choreography has been designed in such a way that he gets enough breathers to sing and dance correctly. I know which steps require more energy, so, we [minimise] the singing portions [around them]. Also, we avoid jerky movements while he sings,” says director-choreographer Rajiv Goswami, stating the obvious, and essential, when it comes to making a musical.  But, there’s another aspect that makes Tanwar’s job easier. As we turn up to catch the preview of Salim-Sulaiman’s musical that opens to the public on April 14, we realise that the leading man is favoured by his flair for dance. So much so that he needn’t even be attentive about his movements as he trains his attention to his rendition. “Things were not always like this, though,” he says, adding, “In the first few weeks, I would run out of breath …