Longest marathon playing keyboard (fortepiano) 25 Hours Record Holder: Tamar Babilua Result: 25 hours Location: Tbilisi, Georgia Date: 28-29 March 2016 RECORD DESCRIPTION: Tamar Babilua played a fortepiano for 25 hours, from 28 to 29 March 2016, at the National Parliamentary Library of Georgia (Tbilisi, Georgia).