His initial 4-day visit to the label's Hitsville U.S.A. studios in Detroit was the first of many that gave Bongiovi the opportunity to work with such artists as Stevie Wonder, Marvin Gaye, and The Supremes.
[4] At Apostolic, Bongiovi worked with Frank Zappa and The Mothers of Invention and producer Shadow Morton.
Later, he worked with the songwriting and production team Holland–Dozier–Holland for Chairmen of the Board's "Give Me Just a Little More Time" and Freda Payne's "Band of Gold", and received engineering credit on Vanilla Fudge's 1969 album, Near the Beginning, but the studio's co-founder Chris Stone fired him.
Partnering with former Mediasound co-worker Bob Walters and hiring a team that included engineer Ed Stasium, Ed Evans, and Bob Clearmountain, they found an abandoned building at 441 West 53rd Street in New York City's Hell's Kitchen neighborhood, which Bongiovi purchased from New York City for $360,000 as part of a building rehabilitation program.
[8] Here he has developed a suite of algorithms called Bongiovi Acoustic Labs DPS (Digital Power Station), enabling engineers to produce recordings with studio-like sound.