Abbey Road Studios large garden behind the townhouse, which permitted a much larger building to be constructed to the rear; thus, the Georgian façade belies the true dimension of the building. Pathé filmed the opening of the studios in November 1931 when Edward Elgar conducted the London Symphony Orchestra in recording sessions of his music. In 1934, the inventor of stereo sound, Alan Blumlein, recorded Mozart's "Jupiter Symphony" which was conducted by Thomas Beecham at the studios. The neighbouring house is also owned by the studio and used to house musicians. During the mid-20th century, the studio was extensively used by leading British
London Symphony Orchestra baulked at weeding out and replacing underperforming players. In 1932 Beecham lost patience and agreed with Sargent to set up a new orchestra from scratch. The London Philharmonic Orchestra (LPO), as it was named, consisted of 106 players including a few young musicians straight from music college, many established players from provincial orchestras, and 17 of the LSO's leading members. To try to raise its own standards the LSO had engaged Mengelberg, a famous orchestral trainer, known as a perfectionist. He made it a precondition that the deputy system must be abandoned, which occurred in 1929. He conducted the orchestra