800 saxophonists will fill the City with music on Midsummer's Day.
Bands will snake through the Square Mile coming together on London Bridge for a musical finale composed and directed by John Harle.
The Leviathan is one of a number of projects marking the 800th anniversary of the first stone-built London Bridge and forms part of the City of London Festival's three-day Sustain! event curated by John Harle.
Any saxophonist can take part, regardless of age or ability, all you need is a saxophone.
For further information and to register contact firstname.lastname@example.org
Related website: www.sustainmusic.org