The Siel Midi interface allows the connection of one or more electronic synthesizers to a C64 or a Spectrum.

The interface communicates with the instruments through a standard communication protocol developed expressly for the interconnection of electronic instruments and called MIDI (Musical Instruments Digital Interface).

Produced by the Italian SIEL, manufacturer of popular electronic keyboards in the 80s, this MIDI interface is equipped with appropriate software application that also allows you to compose music, archive the compositions and listen to them again, save and program instrument timbres and other things.

The device is supplied with a special connector enabling immediate connection to the Commodore 64 and Sinclair ZX Spectrum.

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Download: Siel Midi-CMK49 C64 Software (1090)

source: MCmicrocomputer #39 (March 1985)

The SIEL Sound Buggy system is a music module expansion (synthesizer) released around 1985 in Italy for Commodore 64.

VOICE Buggy interface transforms the Commodore 64 into an entry-level arranger for family: just plug the interface to the CMB64 then turn on your old retro beast and load the included software by tape or drive.

SYNTHESIS unit based on a M112B1 (SGS Thompson) organ tone generator already found on other synth like SIEL DK-70 able to generate only digital square waves.

DRUM up to 28 preset drum patterns styles are available like Rock, Samba, March, Swing, Tango, Beguine, Disco, Funky and more. Drum section is an indipendent circuits and generates 4 percussions instruments: kick, snare, hihat and rimshot.

SEQUENCER simples 2 tracks sequencer with arpeggiator that can be hooked to Midi interface system with special interface and master keyboard including SIEL CM K49.

MEMORY:

• 14 patch presets
• 14 free slots for edit
• 500 events
• 100 chords

Songs can be saved to disk or magnetic tapes.

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Download:

• SIEL Sound Buggy Brochure (Italian) (699)
• SIEL Sound Buggy D64 Software (553)

source: polynominal.com

Many thanks to my friend Ciro of TI-99 Italian User Club for this fantastic gift.

The CMK-49 (Computer Musical Keyboard) of SIEL is a 49-key musical keyboard which connected to the C64 allows to you use like a piano musical keyboard.

This means that the CMK-49 doesn’t produce any sounds, it only communicate using the software (driver) provided with the C64. The sound is played by the SID.

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Download: Siel CMK-49 Software (D64/TAP) & Manual (761)