Pulling off a dance routine entirely on roller skates sounds like a challenge. But to choreographer Ganesh Hegde, it sounded like his long-time dream come true. When The Archies director Zoya Akhtar told him how she envisioned the song, Dhishoom dhishoom, he knew it was his one chance to marry dancing and skating together. “For this song, I had a specific reference. In Xanadu [1980], Gene Kelly did a brilliant skate routine. There aren’t many actors who are also dancers and can skate. Kelly did that with flair. Our films didn’t have the space for it until Zoya wrote the sequence,” he begins. Ganesh Hegde Hegde says the prep began two months before the song was shot with Suhana Khan, Khushi Kapoor and Aditi Saigal aka Dot, among others. For starters, the actors had to learn to skate. “I choreographed it two months in advance. We got a [skating] expert to learn [the moves], and she would train them every evening for two hours for a month. That was followed by a 10-day session with …