Known for inventive hardware hacks, Swedish musician and self-professed ‘mad engineer’ Linus Åkesson debuts his Commodordion: an 8-bit accordion made from two Commodore 64s. Both run QWERTUOSO, Åkesson’s programmable SID chip synthesizer, played via computer keyboard. As with a real accordion, the sounds are triggered by the bellows (that Åkesson improvised from 5 ¼ floppy disks): a sensor measures air flow as the virtuoso plays.