What technology takes recordings of acoustic instruments and places them under the control of a keyboard or computer

Musical Instrument Digital Interface.(MIDI)

Explanation:

Musical Instrument Digital Interface, known as MIDI, can be regarded as technology that gives enablement for connection of devices that make and control sound. These device could be synthesizers as well as samplers and computers, these enablement allows these device to communicate with each othe through the use of MIDI messages. MIDI allows different electronic instruments as well as electronic music devices to be able to communicate with each other as well with the computers. With MIDI technology coming to light , it has spurred a rapid expansion as regards sales as well as production of music software as well as electronic instruments. It can be regarded as term used in describing communications protocol or digital interface. It should be noted that Musical Instrument Digital Interface( MIDI) technology takes recordings of acoustic instruments and places them under the control of a keyboard or computer.

a chromatic scale uses the twelve tones of the octave, while a regular scale only uses eight, or seven different notes (as the first note is played twice)