Prince of Wales Theatre seating capacity slightly to 1,160 seats and to modernise the theatre's facilities. New bars were added, the auditorium completely rebuilt, the backstage areas refurbished and the theatre's famous tower and exterior completely gutted and refurbished with new LED lighting and a crisp modern finish. The theatre re-opened with ABBA's musical "Mamma Mia!" on 16 April 2004. On 18 August 2007, "Mamma Mia!" became the longest-running show ever at the Prince of Wales, overtaking the previous record held by "Aspects of Love" with 1,326 performances at the venue and counting. The production marked another landmark on Thursday 23 August 2007, celebrating
Musical theatre forms. As transportation improved, poverty in London and New York diminished, and street lighting made for safer travel at night, the number of patrons for the growing number of theatres increased enormously. Plays ran longer, leading to better profits and improved production values, and men began to bring their families to the theatre. The first musical theatre piece to exceed 500 consecutive performances was the French operetta "The Chimes of Normandy" in 1878. English comic opera adopted many of the successful ideas of European operetta, none more successfully than the series of more than a dozen long-running Gilbert and Sullivan