 Honeyslug made a Spotify playlist between 30 and 40 tracks long of ideal " dream " music for the game , including tracks by artists signed to indie record label Ghostly International . Sony Santa Monica used their personal connections with the label to coordinate a partnership . Ghostly 's soundtrack is part licensed tracks and part original compositions . The music is split into layers and manipulated with the gameplay . Honeyslug also formed a partnership with Sony Santa Monica to be the game 's publisher and co @-@ developer . 
