This audio-visual installation combines graphic design with architecture, music, and computer technology, thus transforming the famous quote by Johann Wolfgang Goethe, “Architecture is frozen music”, into real experience. To find out what buildings sound like, the author of the project has chosen four iconic objects in Budapest and transformed their individual parameters (date of construction, surface, height) into sounds, using samples recorded inside. As a result, he has created four interactive posters, printed in various techniques, which constitute transcripts of the projections of particular storeys of the buildings. By touching them, the viewer plays music. The project is accompanied by a 144-page-long book with photos registering the research and the development of the transcription method.