" This is the Valdezinator, of course!’ He puffed out his chest. ‘It works by, um, translating your feelings into music as you manipulate the gears. It’s really meant for me, a child of Hephaestus, to use, though. I don’t know if you could –’

‘I am the god of music!’ Apollo cried. ‘I can certainly master the Valdezinator. I must! It is my duty! "

― Rick Riordan , The Blood of Olympus (The Heroes of Olympus, #5)