A haul of recovered reel to reel audio tapes tempts us with the prospect of a hundred missing isolated sound effects recorded for 1960s Supermarionation shows. Will the rare effects remain, or have they been recorded over by a Top of the Pops fan as writing on the boxes indicates. Join us for a Thunderbirds Unseen Update in which we look towards recovering sounds first heard sixty years ago in Gerry and Sylvia Anderson cult favourites like Supercar, Stingray, Fireball XL5, Thunderbirds and more.