Thomas Dolby, the iconic '80s star whose smash hits ''She Blinded Me With Science'' and ''Hyperactive'' helped define the MTV generation/revolution, will break his 20-year silence with A Map of the Floating City. The album, featuring appearances by special guest artists Mark Knopfler, Regina Spektor, Natalie MacMaster, Bruce Woolley, Imogen Heap and Eddi Reader, will be will be released on Lost Toy People Records as a physical CD, and in a special Deluxe Edition featuring a second disc of instrumentals and bonus tracks. Of the album, which is divided into three parts, Dolby says, ''The new songs are organic and very personal. A Map of the Floating City is a travelogue across three imaginary continents: In Amerikana I'm reflecting with affection on the years I spent living in the U.S.A., and my fascination with its roots music. Urbanoia is a dark place, a little unsettling . . . I'm not a city person. And in Oceanea I return to my natural home on the windswept coastline.''