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bismark develops "Software Synthesizer Library", and it has a lot of achievements in the professional Music related products and applications.
Overview explanation in pdf

  • High Portability

    • Independent from OS/CPU/Platforms

  • Can Replace Existing MIDI Hardware Sound Module in Your Products

    • Compatible with GM (General MIDI) Format

    • Compatible with GS (Roland) Format

  • Support Various Targets

    • Light Processing -> For Embedded / Mobile

    • High Quality -> For Professional Software Instruments / Professional KARAOKE Commander

KY Professional KARAOKE Commander

KY / Keumyoung Group (South Korea), Shinto Sangyo (Osaka, Japan), and bismark LLC jointly developed the new software synthesizer engine and sound library and applied it to the professional KARAOKE commander KG LiVEN (KMS-S100). Since this software does not require the specified hardware and can be ported to the general platform like Android and Linux, it enables low cost and more flexible hardware design and helps to re-use effectively your existing MIDI contents property.


The Manetron / insideout ltd.

"The Manetron" is the vintage tape sampling keyboard App for iPhone/iPad/Apple Silicon Mac. Genuine sound sampled from the most famous white body tape sampling keyboard model number of M400S (serial number 419 & 728) manufactured in the 70's. You can see an internal mechanism (tape running animation) and can enjoy with eyes and an ear. Feel the live experience the motor noise mechanical sounds were recorded.

(App Store / Google Play)


Vintage Keys Apps / insideout ltd.

Combo Organ Model V is a musical keyboard app for iPad/iPhone/iPod touch that simulates the electric transistor organ, is called a Combo Organ. It was a big success in the 1960s.

(App Store / Google Play)

Alina String Ensemble is a musical keyboard application for iPhone/iPad/iPod touch that simulates the Solina String Ensemble. The sound is in reference to Solina String Ensemble (Serial number "SERIES 22, No.0093158”) manufactured by N.V. EMINENT BODEGRAVEN HOLLAND in the 70’s. You are sure to be surprised at the real sound generated from this App.
(App Store / Google Play)


Sweet MIDI Player / Roni Music

Sweet MIDI Player is a MIDI player for not only auditioning all types of MIDI files, but for modifying the MIDI files themselves.

Use its mixer-like interface to easily edit the control messages, transpose the music, change the tempo, mute desired MIDI channels, and save the end results to disk.

View lyrics synchronized with the music (MIDI Karaoke files).

It also includes a playlist function which allows you to create and manage playlists.

Built in MIDI sound library with support for DLS/SF2 files.

(App Store)


Shinjuku-Minamillumi 2023 Melody Code Rally

"Melody Code Rally (新宿ミナミルミ 2023 メロディコード®©ラリー)" is a collaborative project developed in partnership with iXOS company. This system was specifically designed for 新宿ミナミルミ (Shinjuku-Minamillumi), a winter illumination event around Tokyo's Shinjuku station.
  The app listens to simple melodies played amidst background music (BGM) and estimates the user's location based on the melody detected. This unique communication method, utilizing melodies, was pioneered by Mr. Kiyoshi Miyaura.
The melodies are generated by the software synthesizer library described here.


MIDI Drum is an 8-track drum sequencer app featuring a simple and user-friendly interface. It offers 4 to 48 steps across 4 cycles on a single screen, allowing for seamless live performances with up to 6 toggled blocks. The built-in sound source is powered by the software synthesizer library described here and it is compatible with General MIDI drum sets.

(App Store / Google Play)


bismark swipestrings

swipestrings is a musical instrument application with an interface similar to the fingerboard of a fretless guitar. Leveraging the fantastic multi-touch screen of the renowned iPhone and iPad, it allows you to express subtle pitch variations in real time, closely resembling the fretless guitar interface. With practice (of course, as everyone would need), this app enables you to create rich musical expressions comparable to playing a real instrument.

(App Store)

Simulator Screen Shot Jul 11, 2016, 21.35.50.png

bismark m16

m16 is a MIDI player application that supports SMF (Standard MIDI File) for GM (General MIDI) specification.

(App Store)


bismark bs-16i

bs-16i is a 16 multi-timbral playback sampler. It supports SoundFont / DLS and can be used for keyboard instrument, MIDI sound module, and MIDI player.

(App Store / Google Play)

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