The project will team Scottish percussionist Colin Currie and his Colin Currie quartet with the participants to perform sea inspired interludes created by Graeme Leak.
The festival is looking for at least 100 performers of any ability over the age of seven.
The participants will take part in special workshop sessions under the supervision of Graeme Leak before the world premiere performance at Waid Academy in Anstruther, Fife on Saturday 29 June.
The concert will also feature the Colin Currie Quartet performing the music of Steve Reich and Kevin Volans.
No previous musical experience or training are required to take part in the project, and all instruments will be provided.
The rehearsal sessions take place from 26 – 29 June across various venues in and around Anstruther, Fife ahead of the performance at Waid Academy on 29 June from 2.30 – 3.30pm.
Svend McEwan-Brown, East Neuk Festival director, says: 'This will be our 5th Big Project – and every year I love seeing the amazing amount of pleasure and sense of achievement that people who join in can get out of them. The idea is to come together to create something truly world class and exciting – and to do that in the company of some of the top musicians in the world.
'This year, Graeme Leak has taken the sea and its weather for inspiration – so expect storms and high winds as well as sunshine and surf. We need as many people as possible to join us for this to make sure that storm really takes the roof off Waid Academy!'
For more information and to sign up to take part in the 2019 Big Project, please visit eastneukfestival.com