Keppy's Steinway Piano was a professional piano soundfont developed by KaleidonKep99. The soundfont is based off samples from a Steinway D-274 concert grand piano, and it was sampled with a TASCAM DR-40. It was provided in the SFZ format, which allows for the customization of the soundfont to a user's specific preference, and for optimization for various types of MIDIs.