The National institute of Environmental Health Sciences maintains a huge collection of sing-along songs (www.niehs.nih.gov/kids/music.htm), including musical instrument digital interface (MIDI) audio files and lyrics.
The editors, for example, in their introduction, refer to MIDI (Musical Instrument Digital Interface) as a "program," but it is in fact what its name says: an interface, a standardized protocol for connecting a digital musical instrument to a computer that, not surprisingly, revolutionized the production of music in the 1980s and after.
Woods first produced his own music on what he calls a "cheesy Atari computer." Using Musical Instrument Digital Interface (MIDI) equipment, he was free to create fully developed tracks with an endless array of instrumental accompaniment.
* A music technology center, including an electronic keyboard lab with computer interface, Musical Instrument Digital Interface, and sequencing abilities, as well as technology for music study, composing and arranging;