Sir David Attenborough will be performing at the Last Night of the Proms - playing a floor polisher as a musical instrument.
Sir David will be joined in the performance of Sir Malcolm Arnold's piece A Grand, Grand Overture composed in 1956 by drum and bass DJ Goldie, on vacuum cleaner.
Other guest performers of the eight-minute work, which has parts for two other vacuums, four rifles, organ and full orchestra, include Rory Bremner.
The comic piece will open the second half at the Royal Albert Hall on Saturday night.
Goldie will be joined on vacuum cleaner in the comic piece by conductor Jiri Belohlavek and violinist Jennifer Pike, 19, a former winner of the BBC Young Musician of the Year.
Rory Bremner will be on rifle, joined by journalist Martha Kearney and Radio 3 presenter Chi-chi Nwanoku on the double bass, and pianist Stephen Hough.
All the participants have played a role in this year's Proms, which opened on 17 July.
Sir David made a guest appearance at the Darwin Extravaganza For Kids last month, while Goldie composed a classical piece, Sine Tempore, on the theme of evolution.
Usual last night favourites - including Land Of Hope And Glory and Rule, Britannia! - will be played on Saturday night, as well as other works including those by BBC Radio 3's composers of the year, Handel, Purcell and Haydn.
You can catch the Last Night of the Proms on Saturday night on BBC Two, from 19.30, moving to BBC One at 21.05. The whole event will be broadcast on BBC Radio 3 from 1930.
Copyright Speakers Corner 2017