Riccardo Loi (born December 5th, 1999), mainly known by his alias, KaleidonKep99 (or Keppy), is an Italian guy who develops SoundFonts and maintains comprehensive programs. He has been in the Black MIDI Team for well over a year and has been a very influential member in the community.

Although he is not an explicitly exclusive MIDI maker, he has blackened some MIDIs in his very early days, some of which are Bad Apple!! and Plain Asia, both part of the Touhou Project soundtrack. He is one of the iconic SoundFont makers of the team proficient in programs such as Viena and Polyphone; some of the SoundFonts he created in his early days are Riky's Ultra-HD Piano (known today as Keppy's Steinway Piano), Farfisa (many versions), Bosendorfer, and Steinway ERxx/EVx9.

His first channel, Riccardo Loi, was removed after copyright infringement, while the second one, Keppy Studios, was deleted by himself in early 2015. He occasionally uploads on his current channel. 

Personal Life

Loi has played the piano since he was 4 years old for nearly for ten years. He devoted himself to music from middle school until high school, after which he devoted himself to information technology (IT).

He regained interest in piano during 2012 when he saw some of Gingeas' videos about black MIDIs, and began producing his own videos on his computer.

Keppy's computers

PCs Main computer Backup computer Laptop
Operating System Windows 10 Pro x64 Windows 8.1 Pro x64 Windows 10 Pro x64
CPU Intel Xeon E5450 @ 4.00GHz Intel Pentium E2140 @ 1.66GHz Intel Core 2 Duo U9300 @ 1.20GHz
RAM 8GB DDR2 non-ECC 445MHz 4GB DDR2 non-ECC 333MHz 4GB DDR2 non-ECC 266MHz
GPU Inno3D GeForce GTX 760 NVIDIA GeForce 7300 SE

Via Chrome9 HC IGP

Intel Graphics Media Accelerator 4500MHD
Storage SanDisk SSD Plus SATAIII 120GB

Seagate Barracuda 7200RPM 1TB

HGST 3.5" Hard Drive 500GB HGST 2.5" Hard Drive 1000GB


  • Skilled at Photoshop/GIMP
  • Skilled at audio/video editing (Audacity, Audition, FL Studio, After Effects, Premiere, PowerDirector and Sony Vegas Pro)
  • Skilled at programming in C/C++, C#, VB.NET, Java and WPF
  • Skilled at SoundFont/SFZ Sample Libraries creation
  • Very good at HTML and CSS coding

Programs he made

During his time in the team, KaleidonKep99 created various tools to help new members in making audio files, configuration programs (Like Piano From Above) and Windows patches (such as 8 and 10) to get the optimal MIDI performance.

  • Keppy's MIDI Converter: Wiki
  • Windows Multimedia API patch for Windows 8.1: Video + Download
  • Windows Multimedia API patch for Windows 10: Download
  • Piano From Above Configurator: Download

List of soundfonts created

Name Version Type of soundfont Size Main Author 2nd Author(s) Developing status Public
Keppy's Steinway Piano 7.xx Professional soundfont 800MB~ KaleidonKep99 Steinway Deprecated No
Flashback D-274 1.x Professional soundfont 800MB~ KaleidonKep99 Steinway Deprecated No
Steinway B-211 1.x Realistic soundfont 1GB~ KaleidonKep99 Steinway Under development Yes
Roland Dream Piano Version 3 Dream-like soundfont 70MB KaleidonKep99 EpreTroll,
Stopped Yes
Roland Cherry Piano Version 3 "Rounded soundfont"
- EpreTroll
70MB KaleidonKep99 EpreTroll,
Stopped Yes
Roland Hedgehog Piano (BusiedGem's special) Version 3 Sharp soundfont 58MB KaleidonKep99 BusiedGem Stopped Yes
The Farfisa Grand Piano 4.01 (5.0 is deprecated) Professional soundfont 590MB KaleidonKep99 Mats Helgesson,

SynthFont Ltd.

Stopped Yes

List of software

Name Version Platform Programming language Size Developing status Public
Keppy's MIDI Converter Version 17 Windows (x86 and x64, compatible with Wine) VB.NET (1.x - 7.x)
C# (8.x and newer)
5.7MB Under development Yes
Keppy's Synthesizer Version 4 Windows (x86 and x64) C++ 2MB Under development Yes