Listen to Step In Time (London Cast Recording) online. Step In Time (London Cast Recording) is an English language song and is sung by Gavin Lee as Bert, Laura Michelle Kelly as Mary Poppins, Charlotte Spencer as Jane Banks, Harry Stott as Michael Banks and Sweeps - Mary Poppins Original London Cast. Step In Time (London Cast Recording), from the album Disney Greatest Musicals, was released in the year 2008. The duration of the song is 5:35. Download English songs online from JioSaavn.