After drifting away from the Warhol circle, he was hired by Elektra Records as a publicist. Elektra, once primarily a folk music label, was having huge success in the rock market with The Doors. Fields visited in Detroit and Ann Arbor in Sepetember 1968 on the recommendation of two fellow djs at WFMU. He recommended to Elektra that the label sign the MC5 and The Stooges, the latter launching the career of Iggy Pop. Both bands served as huge inspirations for the US and UK punk music movements of the mid- and late-1970s; both bands were later kicked off of Elektra Records.
After he moved back to New York, Fields discovered the Ramones at the club CBGB, and helped get the band signed to Sire Records. After he became their co-manager, with Linda S. Stein, they took the band to England in 1975, where they had a huge impact, inspiring the nascent UK punk movement, which spawned The Sex Pistols and The Clash. However, back in the US, Fields took the Ramones on their first tour across the U.S. with little success outside of New York. Fields also managed Steve Forbert and The Modern Lovers. After leaving the music business, Fields worked in a variety of roles including photography. He also ghostwrote the biography for Warhol superstar Cyrinda Foxe (Dream On). Fields currently lives in New York City.
Interviews with Fields are included in the documentaries "It's Alive 1974-1996" (2007); End of the Century: The Story of the Ramones (2003); 25 Years of Punk (2001); We're Outta Here! (1997); and MC5: A True Testamonial; and Nico: Icon (1995).