The Proms September 2011, a Prom given by the Israel Philharmonic Orchestra was severely affected by interruptions from pro-Palestinian protesters. While the Palestine Solidarity Campaign had urged a boycott, they denied being behind the disruption inside the Royal Albert Hall. For the first time ever, the BBC took a Prom concert off the air. Successive Controllers of The Proms after Glock have been Robert Ponsonby (1973–1985), John Drummond (1986–1995), Nicholas Kenyon (1996–2007), and Roger Wright (2007–2014). Edward Blakeman, editor of BBC Radio 3, became interim Proms Director upon Wright's departure in July 2014. In May 2015, the BBC announced the appointment of
The Proms Dunstaple, and Machaut, as well as less-often performed works of Johann Sebastian Bach and Joseph Haydn. From the 1960s, the number of guest orchestras at the Proms also began to increase, with the first major international conductors (Leopold Stokowski, Georg Solti, and Carlo Maria Giulini) performing in 1963, and the first foreign orchestra, the Moscow Radio Symphony Orchestra, performing in 1966. Since that time, almost every major international orchestra, conductor and soloist has performed at the Proms. In 1970, Soft Machine's appearance led to press attention and comment as the first "pop" band to perform there. The Proms continue today,