modified arrangement of this version. In 2005, a new orchestral arrangement by Christopher Austin was commissioned by the BBC for the Blue Peter prom and performed by the BBC Philharmonic. It has also been performed by the BBC Symphony Orchestra as part of the celebration of 75 years at Maida Vale. 2010s From "The Eleventh Hour" the theme received a complete reworking to tie in with the new cast, production design and title sequence design. Arranged by Murray Gold, this theme, while still retaining Gold's counter-melody, has the bassline and electronic melody redone by Gold on a synthesizer. The reworking was something of a departure from all previous arrangements, with a prominent new melodic fanfare theme playing in the opening bars, and a percussion sound accenting each quaver of the rhythm. The end credits featured only a short arrangement with introductory fanfare and the final notes of the main theme. The only exception to this was at the end of "The Beast Below", where the full theme tune begins under the trailer for "Victory of the Daleks". This is the only episode with this arrangement to feature the 'middle eight'. A leaked playlist for the 2012 Summer Olympics opening ceremony suggested that the theme would be performed, but this did not occur. The theme and title sequence was revised yet again for the 2012 christmas special, "The Snowmen", to coincide with a change of companion. This new piece retains the melodic fanfare of the opening bars, as well as Gold's bassline and lead – albeit with all of them modified (with the latter two's timbre modified – especially the bassline, and the lead dipping slightly downwards during the first high B note) and lacking both the heavy use of percussion from the previous arrangement, and removing the counter-melody that featured in all previous Gold arrangements. However, for the end credits of this episode, the previous arrangement was still used. This arrangement was revised further for "The Bells of Saint John", featuring a more prominent bassline and removing the electronic beeps during the opening fanfare. The end credits were updated to use this version of the theme, now featuring the main melody repeated twice, in place of the fanfare. The ending of the opening theme was altered to incorporate some orchestral elements from the 2010–2012 version, along with some other minor changes. The 'sting' is unusually quiet in this closing arrangement,