All aboard for a fun-filled CBeebies musical ocean adventure for all the family! Take a deep breath and dive underwater in the concert hall submarine with its musical crew, the BBC Concert Orchestra. Favourite CBeebies characters JoJo and Gran Gran are on board with a Gran Gran plan, and Andy has his submarine pod at the ready. Join the crew to search for endangered creatures, find out fascinating facts, and collect sounds and pictures for your very own musical ocean scrapbook. A magical multi-media event featuring CBeebies theme tunes, classical music favourites, live action film and animation and a few surprises along the way.