Opcode Systems, Inc. was founded in 1985 by Dave Oppenheim and based in and around Palo Alto, California, USA. Opcode produced MIDI sequencing software for the classic Mac OS and Microsoft Windows, which would later include digital audio capabilities, as well as audio and MIDI hardware interfaces. Opcode's MIDIMAC sequencer, launched in 1986, was the first commercially available MIDI sequencer for the Macintosh. History In 1985, Stanford University graduate Dave Oppenheim founded Opcode. Dave was the majority partner, focusing on Research & Development, with Gary Briber the minority partner focusing on Sales & Marketing. Paul J. de Benedictis joined the company to write product manuals, test products and demo the products after meeting Ray Spears in San Francisco while he was printing the beta manual for MIDIMAC Sequencer v1.0. The products were announced at the New Orleans Summer NAMM (June 22–25) (after which Apple objected to the name) and, according to composer Laurie Spiegel, publicly available in July, 1985. In 1986, two major products were released. One was the MIDIMAC Sequencer, which later became the Opcode Sequencer and, eventually, Vision. The other was the MIDIMAC interface for the Macintosh computer. These products allowed musicians to use the Macintosh platform for music sequencing and were utilized by electronic music pioneers such as Herbie Hancock, Wendy Carlos, Thomas Dolby, and others. In 1986, music software programmer David Zicarelli licensed his Editor/Librarian for the Yamaha DX-7 to Opcode, which published this product. At its peak, Opcode would market over ten separate Editor/Librarians, software programs designed to facilitate the editing of sound patches for digital synthesizers and the storage and organization of those patches on a personal computer. In 1987, Gary Briber sold his portion of the company to Chris Halaby, with Chris assuming the position of Chief Executive Officer and Marketing and Sales responsibilities falling upon Paul J. de Benedictis and Keith Borman, respectively. Paul de Benedictis was also the product manager for many of the products including the new version of Opcode's sequencer, Vision. In 1989, Opcode introduced Vision, its award-winning sequencing platform for the Macintosh (and, eventually, Windows computers as well). A simplified version, EZ Vision, was soon released. EZ Vision's successor, MusicShop, included a simple notation view - a first in a sequencing product in that price range (roughly $100 US). Also in 1989, it licensed the computer music authoring system Max from IRCAM, where it had been developed academically