And you can join in, too!
The Big Christmas Wind Orchestra and Choir takes place on Saturday December 13th in Kings Cross, London, and everyone is invited to participate in their joyous celebration of carols and festive music.
More performers are signing up every day, and they welcome anyone to join in, free of charge.
Anyone can come and perform with their wind, brass or percussion instruments, or even simply bring their voices to join their choir.
Traditional carols from O Come All Ye Faithful to Hark the Herald Angels Sing will be featured, alongside Christmas pop classics, orchestral favourites and some beautiful, special arrangements.
There is something on the programme for everyone, all specially-selected for the event with parts to suit all ability levels.
The performance will be held at Kings Cross, a stunning backdrop among the Christmas markets, shops and restaurants and plenty of special winter activities.
With hundreds of musicians already registered to form the enormous ensemble among the trees and lights, festive musical fun is guaranteed.
Event co-ordinator Adam Funnell told That's Christmas 365: "our Christmas events are a highlight of the festive season for many performers, with well known carols and music performed at an unbelievable scale.
"It's also a perfect way to get into performing as a group without diving into a commitment. We'll be playing and singing everyone's favourite carols and well known festive music to inspire everyone into music making".
The event is now in its 14th year and has steadily grown from just a handful of friends to 500 or more musicians. Performers flock to participate from across the UK, and even visitors from around the world.
Led by expert professional musical directors, the Big Christmas Wind Orchestra and Choir always has space for more performers to join in, with no rehearsal or experience required.
Anyone wishing to perform must register online via bigchristmaswindorchestra.org so that they can be sent sheet music in advance of the day.
They can then join the event from 1pm on Saturday December 13th, and perform all afternoon. There is no cost at all to participate, and all accessibility needs will be catered for. Audiences are also very welcome to come and watch, or even sing along!
