We are looking for the shape of music, to make that invisible art visible—even palpable. Vector Sequence Model (VSM) is a procedure that maps musical MIDI data into virtual sculptural form. Its analytical strength is based on the tonality detection of music. For the purpose, we have developed a three-dimensional version of the traditional key circle of fifths, major-minor key ball. With VSM, musical time is associated with vectors and their movements in three-dimensional space.