Music Center Incorporated (MCI) is the former name of a United States manufacturer of professional audio equipment that operated from 1955 until 1982 when it was acquired by the Sony Corporation. The company is credited with a number of world firsts: commercialising the 24-track multi-track recorder, the tape Auto Locator and in-line mixing console.

Criteria Studios is a recording studio in North Miami, Florida, founded in 1958 by musician Mack Emerman. Hundreds of gold, platinum, and diamond singles and albums have been recorded, mixed or mastered at Criteria, for many notable artists and producers.