Escala (previously known as Scala, then eScala) are an electronic string quartet, from London, England who rose to fame when they performed on and reached the final on the second series of Britain's Got Talent on ITV1 in May 2008.

Two of the four members of Escala, Izzy Johnston and Chantal Leverton, were part of Wild, a similar five-piece classical group who were signed to EMI and released an album with the label in 2005. The four members of the group met in 2005 when they were part of the string section on an arena tour with McFly. Three of them, Victoria Lyon, Chantal Leverton and Natasya Hodges performed with Jeff Wayne on his War of the Worlds Tour in 2006.

The four members of Escala are professional musicians who have had experience of performing in orchestras and on tour. However, with Britain's Got Talent being a competition for "undiscovered talent", their experience was said to run counter to the spirit of the show, which Escala refuted, with Izzy Johnston saying, "It’s supposed to be open to everyone, professional and amateur alike."

They were also alleged to have been invited to audition for Britain's Got Talent by Simon Cowell after they supposedly played the X Factor wrap party in late 2007. However, ITV refused claims this was unfair, stating "Scala went through the same application and audition process as everyone else. Britain's Got Talent is open to any performer be it professional or amateur, with any talent."

The members of Escala denied that they played at the X Factor wrap party, with Izzy Johnston saying that she had played as part of a string section backing for Michael Bublé in his appearances as a guest on the show.